Astronomy

July 09, 2008

What is the state of high school astronomy education?

Saying she regularly gets emails from people who wish they'd taken astronomy in high school, Dr. Pamela Gay, a.k.a., StarStryder, asks: What is the state of astronomy education in the Unites States? Not so good.

In today’s educational environment, there isn’t always room to fit in astronomy. There are no states in these United States that have astronomy education certifications. Astronomy is an extra. When something needs cut, it is one of the first programs to go.

But isn’t astronomy vast enough (encompassing the whole universe and all that) that it can be used to teach other things? When I was in middle school I took part in a curriculum called “Project STAR”.... The STAR is in all caps because it stands for “Scientific Teaching Through its Astronomical Roots.” This program sought to teach math, and physics, and much much more, while teaching astronomy.

Is it too much to wish that 10%, or any other double digit number, of students were able to take astronomy in high school from teachers who have taken a university level course in astronomy?

While certainly not capable of the math that the provides the syntax for much of astronomy, I'm currently reading the Elegant Universe, which nonetheless ably imparts some mind-blowing concepts from Specific and General Relativity and Quantum mechanics.

I'd have to agree with some of her writers, it's certainly making me wish I had taken more astronomy in high school.

Wayne

July 01, 2008

New new Worlds: "But wait, there's more!"

[Cross-posted from the IdeaFestival] I enjoyed this quote from the recent article, "For Alien-Life Seekers, New Reason to Hope," regarding the results from a new sky survey:

Whether habitable or abominable, planets are inescapable. 'You make a star, you’re probably going to get planets,' said Seth Shostak, a senior scientist at the SETI Institute in Mountain View, Calif. 'They’re like those knives that get thrown in for free when you order a Veg-o-matic.'

The idea that there might be other planets like ours orbiting distant stars is hardly new - exo-planet hunters have cataloged over 300 in the past dozen years - but the notion that Earth-sized planets might be fairly common is a more recent development. As one planetary theorist says in the article above, it's very suggestive that just as soon as astronomers were able to find low-mass planets, they found them. And as observational techniques are further refined, the detection of an exo-planet very similar in mass to ours now seems almost a matter of time.

Wayne

Wikipedia: planetary formation

June 30, 2008

Dark energy observations planned

Paul Gilster reports on the Dark Energy Survey, a new earth-based observatory that will try to make sense of the approximately 74 percent of the universe we don't understand, dark energy, which scientists believe is responsible for the accelerating expansion of the cosmos. Fully understanding the properties of dark energy may alter our current understanding of the fundamental laws of physics.

ESA has more on the lenses used in the camera that will conduct the survey.

Wayne

June 18, 2008

"Stellar Horizon"

Alphacentauri The nearest stars, other than our sun of course, can be seen in this image from CiCLOPS. Entitled "steller horizon," it depicts Alpha Centauri A and B - but not the red dwarf companion Proxima Centauri - above Saturn's ring plane. Click the image for a larger version.

CICLOPS also added this note about relative distance of the stars compared to the distance of Saturn from Earth:

From the orbit of Saturn, light (as well as Cassini's radio signal) takes little more than an hour travel to Earth. The distance to Alpha Centauri is so great that light from these stars takes more than four years to reach our solar system. Thus, although Saturn seems a distant frontier, the nearest star is almost 29,000 times farther away.

Wayne

Credit: NASA/JPL/Space Science Institute

A trio of Earths

Phot19a08normal_2Here is an artist's impression of the latest in a haul of planets from recent observations at the European Souther Observatory.

The image depicts a system of three "super-Earths" around the star HD 40307 in the constellation Pictor.

As detection techniques improve, the ability to potentially resolve exoplanets as small as Earth is becoming more likely, and, indeed, according to European astronomers about 45 new "Earth-like" planets have been uncovered by Harps, or the High Accuracy Radial Velocity Planet Searcher at the observatory in Chile. The new discoveries have the mass of three or four Earths.

Astronomers now believe that roughly thirty percent of the stars in the Milky Way may harbor such super-Earths, according to a New York Times article yesterday.

Scientific American has more.

Given the wealth of data being created by terrestrial observatories like Harps, space craft such as Kepler almost undoubtedly will find planets very similar in mass to our own within habitable orbits - orbits permitting the presence of liquid water - of their parent stars.

You and I are living in the Golden Age of planetary discovery.

Wayne

June 13, 2008

Carnival of Space no. 58 posted

The very latest Carnival of Space is out, hosted by Fraser at Universe Today. Check it out. My favorite story is about Plutoids, the newly suggested name for bodies, like Ceres, tucked away in our solar system.

Wayne

June 12, 2008

High energy observatory, GLAST, is launched

GLAST, which will scan the heavens for high energy bursts, and perhaps help solve the mystery of dark matter, has successfully launched according to Wired. A nice graphic illustrating the electromagnetic spectrum accompanies the article.

From NASA:

After a 75-minute flight, the GLAST spacecraft was deployed into low Earth orbit. It will begin to transmit initial instrument data after about three weeks. The telescope will explore the most extreme environments in the universe, searching for signs of new laws of physics and investigating what composes mysterious dark matter. It will seek explanations for how black holes accelerate immense jets of material to nearly light speed, and look for clues to crack the mysteries behind powerful explosions known as gamma-ray bursts.

Wayne

May 29, 2008

GLAST's "new physics" search begins next week

228085main_fairopenlg GLAST has a launch date of next Tuesday, June 2. The telescope is now on the launch pad atop a Delta II rocket. The space-borne observatory

"will open a wide window on the universe through the study of Gamma rays, the highest-energy form of light. GLAST data will enable scientists to answer persistent questions across a broad range of topics, including supermassive black-hole systems, pulsars, the origin of cosmic rays, and searches for signals of new physics."

GLAST could help scientists get closer to answering what Dark Matter is made of. A more complete list of the science that this instrument will undertake is here.

Above right, workers add the payload fairing around the observatory in preparation for launch.

Photo credit: NASA/Jim Grossmann

Wayne

Wikipedia: Gamma Rays, Dark Matter

May 23, 2008

Do we need to send humans to explore space?

What's your space IQ? Referencing a 10 question quiz hosted elsewhere, New York Times science writer John Tierney has added three "extra credit" questions of his own, one of which is the title to this post. He promises to publish the most cogent argument - for or against - human space exploration in an upcoming TierneyLab, his regular "ideas in science" column in the Times.

Wayne

May 15, 2008

Have you seen a star explode?

G19_supernova_9 Now you have.

On the lookout for evidence of young supernovas in our galaxy for 50 years, astronomers have spied the remnants, at a mere 140 years old, of the youngest such example in the Milky Way.

According to  NASA, it could not be observed in optical light because it was obscured by a dense field of gas and dust near the center of the galaxy. However, because the heavy elements of the exploding star penetrate the curtain of dust and gas, evidence for the supernova can be observed by radio and X-Ray telescopes.

This ejected material is the foundation on which new stars and planets are formed.

Hat tip: Universe Today.

Image credit: X-ray (NASA/CXC/NCSU/S.Reynolds et al.); Radio (NSF/NRAO/VLA/Cambridge/D.Green et al.))

Wayne

Wikipedia: supernova

May 08, 2008

"Big infrastructure, small cube"

Malphrus [Kentucky Space readers: the series of posts from a one-day conference held yesterday in Lexington, Kentucky are grouped under Kentucky Space Conference '08 in the category cloud on the blog. Image: Dr. Malphrus]

University of Kentucky student Michael Gailey, who is developing some of the testing facilities for the Kentucky cube, is up and is discussing spacecraft testing. Because there are no Jiffy Lubes in orbit, rigorous testing on the ground prior to launch is required, he jokes.

Threats in space include radiation, heat on the sun-side of Earth, and cold when in the shadow of the planet. Throw in the hard vacuum of space and the operating environment is hostile.

Michael displays a picture of the thermal vacuum facility being build at the University of Kentucky now. It will simulate the space environment - thermally cycling the cube from hot to cold and back again, and performing a "bakeout," which tests for any undesirable outgassing from the cube that might pose a threat to other spacecraft on the ride to space.

The shaker will be able to shake a 50 pound satellites on three axis in order to meet the NASA standard for durability while the craft is encased in the P-POD on the rocket.

A clean room is also being built ensure that no foreign components make their way into the cube. The room will meet "class 100" clean room standards.

Showing a picture of the room, Gailey says it's a great place to be if you have allergies.

Dr. Ben Malphrus, who is a Morehead State University faculty advisor for the ground portion of KySat, is up next.

The big project has been the development of the 21 meter dual-use space tracking antenna. It's 82 feet in height. And coming in at roughly 300,000 pounds, it is capable, as he says, of very wide range of motion in altitude and azimuth. The dish has also been designed to operate at K and KU bands to push the broadband envelope.

This antenna is capable of both radio astronomy and the support of satellite missions. It can provide long term monitoring campaigns, sky surveys (dynamic mapping of HI in the Milky Way) and the study of galactic supernova remnants.

Morehead State is very fortunate to have such a world class instrument, he says.

MSU has also obtained an anechoic chamber from Lockhead Martin, which it rebuilt. It simulates the EM environment of space.

Lastly, in development at Morehead is a Space Science Center and Research, Development and Educational Facility, which will permit control of the antenna and include a Digital Star Theater. This building is currently under construction and Dr. Malphrus treats everyone to some pictures - which also show, by the way, the radio antenna on a hill in the background. The building will be devoted exclusively to space sciences, and probably, he adds, wouldn't have been possible without an initiative such as those coming from Kentucky Space.

Here's the takeaway from these two speakers: The physical infrastructure to support Kentucky Space is being built now. The capacity to design, build, test and validate flight hardware in Kentucky is likewise being developed.

As Dr. Malphrus points out, "These are big results are coming from a very small cube."

Wayne

April 30, 2008

Bronze Titan

4886_10977_0 This picture was posted by CICLOPS, the team responsible for Cassini imaging, on a page describing Cassini's current, and brief, 66th orbit around Saturn. Since I hadn't seen this image of Titan before, I wanted to share.

Wayne

April 25, 2008

Meet Eris

Eris This is an artist's conception of a new member of our solar system, the dwarf planet Eris, which is approximately three times farther from the sun than its dwarf companion, Pluto. At that distance the small body is very, very cold and the sun appears much like other stars in the Milky Way as Eris moves among the "icy wrecks" of the Kuiper Belt.

Wayne

Image source: NASA/JPL-Caltech

April 17, 2008

Carnival of Space No. 50

My name is Wayne Hall and I work with the Kentucky space program. Huh? Kentucky what?!

Suffice it to say that a group of talented people are out to change the perception of what's possible in the commonwealth of Kentucky by doing hands-on space science. The very first project of this ambitious enterprise is a cooperative, student-led effort to design, build and fly a CubeSat that kids from the eastern mountains to the western Mississippi river shore can figuratively reach out and touch from classrooms all over the state. The first of many planned efforts, it will rocket to orbit sometime late this year or early next. And with that,

Welcome to the 50th edition of the Carnival of Space! From rocket racing to astronomy to particle physics to the search for intelligent life, this week features a wide variety of space-related topics. So let's dive right in.

New Frontiers has news about the Rocket Racing League and its announcement about upcoming exhibition race dates. Meanwhile, Space Transport News discusses Red Bull air races and the differences and similarities to rocket racing as well as taking some notes from the news conference.

At Altair VI, David S. F. Portree writes about the old NASA Office of Exploration Mars' and Moon vision for space exploration and has something to say about space tourism.

The Planetary Society's Emily Stewart Lakdawalla notes the stunning images of Phobos available from the Mars Express image catalog. A Babe in the Universe follows suit, pointing out that the crater Stickney is 9 km across on a moon only 22 km long. Speaking as a blogger who makes liberal use of CICLOPS and HiRISE images, the pictures coming from current robotic missions are spectacular. I'm looking forward to what MESSENGER and New Horizons might reveal.

Speaking of the planets, Stuart Atkinson at Cumbrian Sky reports on one suggestion to send monkeys to Mars. You read that right. He also provides some images of Pheonix's landing spot on the planet.

Fraser explains why Pluto is no longer a planet. Let's just say that the region beyond Neptune is awfully interesting.

Of the many satellites that dance around Sun, Neptune's Triton is probably not a world that tickles one's imagination when envisioning space colonization. But while it may be ignored as scientists chase after Mars and Titan, Neptune's Triton may in the distant future become a prime location at the edge of our solar system. Colony Worlds asks: Neptune's Triton: Is It Worth Billions, Or Trillions?

This week's Space Video at Space Feeds is the eighth episode of Firefly, Out of Gas.

At Next Big Future, Brian Wang asks whether a $153 million Thin Film Dome inflated over cities might protect against nuclear weapons or perhaps substitute for communication satellites. Russian inventor and researcher Alexander Bolonkin has developed an interesting technology that suggests all kinds of commercial possibilities.

Can Dark Matter be directly detected? Anticipating such an announcement, astrophysicist Ethan Siegel expresses his doubts at Starts with a Bang! It's a question I've also put to Star Stryder, Pamela Gay.

Astronomer Robert Simpson at Orbiting Frog contributes a post to the 50th carnival on Nebulae in 3D. He nominated another post about the late John Wheeler from Daniel Holz at the wonderful group blog Cosmic Variance. Holz movingly recalls his time with the physicist, who was conversant in biology, history and poetry. Please give it a read.

At Out of the Cradle, Ken Murphy continues his look at growing plants on the Moon with a review of the book "Lunar Base Agriculture" in part II of his article "Of a Garden on the Moon".

At Centauri Dreams, Paul Gilster, who is surely link-weary from the attention this blog has paid to him, posts a story about "Life as Rarity in the Cosmos," which looks at new research suggesting that we are living rather late in the history of Earth's biosphere. If so, it might have implications for the possibility of intelligent life elsewhere. Bottom line: we might find that life itself is rather common, but intelligent life? Not so much.

Do we have anything to worry about from the Large Hadron Collider? Ian O'Neill explains that "an Earth-eating black hole is pretty much impossible."

Ever-prepared, Scouts Canada describes a variety of methods for finding direction without a compass or GPS by using the sun, stars and moon. In practical fashion, Scouts blogger Mang also lends some context to astronomical distances - the discussion includes a scale overlay of the solar system on the City of Toronto using a standard marble for Earth - and writes about modeling a micro-satellite, the Microvariability & Oscillations of STars (MOST) satellite. The MOST team has opened target proposals to the public.

Space Cynics, meanwhile, wonders how prepared Gen-Y is to contribute to the national space program.

Tyler Nordgren is educating visitors about what they learn about the solar system and universe through what they can see for themselves in the dark starry skies above the parks, as well as on the ground around them in the wonderful geological processes and features the parks protect. The most recent entry from this week at Arches National Park is found here.

Finally, at Music of the Spheres, Bruce Irving asks Why Space?, a theme that the Martian Chronicles also picks up on this week, along with providing some great Cape Verde images as seen from everyone's favorite Martian rover.

Why explore indeed! And since it's THAT time again, perhaps it's appropriate that John Benac contribute a post about Political Action for Space, the first space political action committee.

It's been a blast to host the carnival at Kentucky's space program blog this week. KySat hopes to make its own news in the near future. So please come back and please visit all the great blogs and bloggers you see listed here!

Wayne

April 14, 2008

New NASA Science Site

Conveniently divvied up into "Earth," "Heliophysics," "Planets" and "Astrophysics," NASA has launched a brand new site focused on the space sciences.

Wayne

April 10, 2008

49th Carnival of Space online

The 49th and very latest Carnival of Space is up at the site of English astrophysicist and full time science writer Will Gater. There are a great many good links to follow and good stories to read, so please, go check them out.

Wayne

April 07, 2008

New Carnival of Space

The Next Big Future is playing host to this week's Carnival of Space. There are several interesting articles, including links to a commemoration of the 40th anniversary of the film, "2001," Paul Gilster's speculation on the odds of habitable planets around red dwarfs and a "Mars or Arizona?" photo contest.

Wayne

April 03, 2008

Titan haze and topology

Pia09869_modest This recently released photo of Titan clearly shows the high altitude haze layer surrounding the Saturn satellite. The atmosphere of the moon moves in superrotation, that is, faster than Titan itself rotates.

More data about the topology of the moon has also been released.

And somewhere on the surface, the Huygens' probe rests.

Wayne

Image: NASA/JPL/Space Science Institute

April 01, 2008

Planet formation observed?

Has planet formation been observed? Astronomers studying the young star AB Aurigae believe that maybe it has.

Wayne

March 25, 2008

Latest Carnival of Space online

Just a quick post to say that the latest Carnival of Space has been posted to Riding with Robots, a site the pulls in images from the various robotic missions currently underway.

Wayne

March 21, 2008

Life's building blocks get around

[Cross posted from IdeaFestival blog] While the discovered planet is far too hot to support life as we know it, the Hubble Telescope has found organic molecules in the atmosphere of a body orbiting a distant sun. NASA held a teleconference yesterday to announce the finding.

This discovery proves that Hubble and upcoming space missions, such as NASA's James Webb Space Telescope, can detect organic molecules on planets around other stars by using spectroscopy, which splits light into its components to reveal the 'fingerprints' of various chemicals.

'This is a crucial stepping stone to eventually characterizing prebiotic molecules on planets where life could exist,' said Mark Swain of NASA's Jet Propulsion Laboratory (JPL), Pasadena, Calif., who led the team that made the discovery.

Swain is the lead author of a paper that will be featured in the March 20 issue of the journal Nature.

Related, there is news about the relative presence of such molecules in the circumsteller disk of a young star. These disks are believed to be the raw material for planet formation. And because there is a higher concentration in the disk than in the intersteller cloud that led to the disk, there is evidence now that an active organic chemistry is occurring as systems take shape.

While astronomers are beginning to understand the movement of organic chemicals in planetary protosystems, one needn't observe distant worlds to see the results. Leaving aside life on our own Blue Marble, the Saturn moon Titan, visited in 2005 by the Huygens probe, is host to hydrocarbon seas.

The New York Times has posted a story on the story.

Wayne

Wikipedia: protoplanetary disk

March 19, 2008

WMAP offers up more news from beginning of time

Thanks to data collected by the Wilkinson Microwave Anisotropy Probe, or WMAP, NASA is releasing more detailed measurements of the universe. One of the announcements demonstrates how the physical composition of the cosmos has changed:

 

Microwave light seen by WMAP from when the universe was only 380,000 years old, shows that, at the time, neutrinos made up 10% of the universe, atoms 12%, dark matter 63%, photons 15%, and dark energy was negligible. In contrast, estimates from WMAP data show the current universe consists of 4.6% percent atoms, 23% dark matter, 72% dark energy and less than 1 percent neutrinos.

WMAP measures the oldest light in the universe, which is "imprinted" with information about the earliest conditions according to the NASA news release.

Wayne

March 17, 2008

Ariel, Miranda, Titania

At the Planetary Society, Ted Stryk has uncovered some additional detail from Voyager's images of the moons of Uranus that were taken over 20 years ago.

Wayne

March 07, 2008

Balloon exoplanetology?

At Centauri Dreams, Paul Gilster runs down some affordable exoplanet mission concepts, one of which involves high altitude balloons.

Wayne

March 06, 2008

Dawn's camera blinks to life

Fc2_calib_color_300 At the Planetary Society, Project System Engineer for the Dawn mission, Marc Rayman, has posted an update that includes a stunning false color image of the Eta Carina Nebula, also shown here, taken by the Framing Camera on board the spacecraft.

Powered by an Ion propulsion system, Dawn is on its way toward a rendezvous with the asteroid Vesta and dwarf planet, Ceres, where it will orbit these two very different bodies looking for clues into the origins of the solar system. More on the mission may be found here.

Wayne

Credit: NASA/JPL/MPS/DLR/IDA

March 03, 2008

Seeing the universe anew

Introduced in this TED video, Microsoft will soon unveil the WorldWide Telescope, which will weave feeds from satellites and telescopes into a seemless guided tour of the universe.

Wayne

February 28, 2008

Ultraviolet universe

214434main_m33_uvot Captured by the Swift satellite and made available by NASA, this is a portrait of M33, a galaxy 2.9 million light years from our own. The image is bathed in ultraviolet because that's the spectrum the instrument on Swift can see. Ultraviolet is the part of the light spectrum that will burn skin on a bright summer day.

Wayne

February 25, 2008

Michio Kaku on Time Travel

In this "IF Conversation," Michio Kaku, leading theoretical physicist and author, discusses “Parallel Worlds and Time Travel.” This series of very brief exchanges filmed at the September 2007 IdeaFestival may also be found at IFTV on YouTube and on the IdeaFestival web site.

Wayne

February 22, 2008

Mars webinars for educators

The Oregon Space Grant consortium lists four free Mars Web seminars designed for science educators, one of which focuses on the Mars Student Imaging Project. The National Science Teachers Association has more on this opportunity.

Wayne

Five Questions with Astronomer Dr. Pamela Gay

[Cross-posted from the IdeaFestival blog] This "Five Questions" interview with Astronomer Dr. Pamela L. Gay, also known as Star Stryder, was completed this week. I want to publicly thank her for taking time out of her schedule to answer these questions by email.

If you have any interest at all in astronomy and the deeper questions that surround the subject, I encourage you to check out her blog as well as her contributions to Astronomy Cast. She, along with Paul Gilster at Centauri Dreams, are two of my favorite bloggers on any subject.

Wayne

What attracted you to Astronomy?

Sometimes a person doesn't outgrow their childhood passions. I've been interested in astronomy as long as I can remember. My earliest memories include taking naps so I could stay up and watch images of Jupiter and Saturn being sent back by the Voyager missions, and watching the contrails of the space shuttle going in for a landing at Edwards while living in Southern California when small. I remember looking through my dad's small telescope. As I grew up, my astronomy hunger was fed by Odyssey Magazine, Sky and Telescope, Science Fiction, and eventually even trips to Space Camp. When I started college, I didn't think I had the math skills to be an astronomer, and I declared an International Relations major in James Madison College at Michigan State University, and started taking astronomy and honors physics and calculus classes because I figured I get an astronomy minor and seek jobs as a science advisor in the Federal Government. At some point my freshman year I realized that while I loved my IR classes for their content, my cultural peers were the science folks in my astronomy classes. I am a science nerd, born and breed. I was doing well in science classes, so I redeclared as an astrophysics major. I guess, I just never knew when to stop trying to understand the stars.

Continue reading "Five Questions with Astronomer Dr. Pamela Gay" »

February 20, 2008

Amateurs help find solar system like ours

Referencing a New York Times article, Hobbyspace points out that amateur observers helped find a solar system like ours.

Wayne

February 18, 2008

Latest Carnival of Space out

This must be the largest Carnival of Space yet. From the use of the Wii remote to teach physics, to plant extremophiles, to an explanation of redshift, there's a lot of space news and science in this edition. Check it out.

Wayne

Name that satellite

NASA is asking the public to name its Gamma-ray Large Area Space Telescope, or GLAST. The telescope is designed to peer at "extreme environments," looking for "signs of new laws of physics," including what dark matter might be.

To name that satellite, go here. According to NASA:

Anyone who drops a name into the "Name That Satellite!" suggestion box on the Web page can choose to receive a "Certificate of Participation" via return e-mail. Participants also may choose to receive the NASA press release announcing the new mission name. The announcement is expected approximately 60 days after launch of the telescope.

Wayne

February 08, 2008

Finding the strings in string theory

[Cross-posted from the IdeaFestival weblog] Could the math in string theory, the most esoteric of symbolic languages, have a physical analog after all?

Found via Michio Kaku's site, an article in Physorg.com suggests that primordial strings might be found in the deepest time. Since one of the primary criticisms of string theory is that it cannot be tested and is thus not science, the news that cosmic microwave background radiation might be scanned for evidence of strings would seem to be a relatively straightforward scientific proposition.

Related, Universe Today has posted an article saying that the Large Hadron Collider, scheduled to go online this spring, might generate particles "that are sensitive to the dimensions beyond our four dimensional space-time."

These exotic particles, called Kaluza-Klein gravitons, would be highly sensitive to the geometry of extra-dimensions, giving scientists an idea about what lies beyond our universe. If these particles are detected, and if their characteristics can be measured, then perhaps the extra dimensions predicted by string theory may be proven to exist…

That's a lot of ifs, of course. But the universe beyond? Now that's cool. And if you're into participatory science and you have a few extra and available computing clock cycles, you can lend a hand.

Wayne

Wikipedia: string theory

January 29, 2008

NASA to release new science findings, images of Mercury

Never-before-seen images of Mercury and new scientific findings about the planet will be featured at a news conference planned for Wednesday, according to NASA.

Wayne

January 28, 2008

Finding extrasolar planets

If you just happen - ahem - to be in New York City this evening, The Explorers Club is hosting a free public lecture, In Search of Extrasolar Planets.

For centuries, scientists have pondered the possible existence of extrasolar planets, but only in recent years have such planets actually been discovered. As of late 2007 more than 250 extrasolar planets have been discovered. Most are giants, the mass of Jupiter or greater and inhospitable for life. Many more planets, including smaller ones more like Earth, may lurk undetected in these systems -- but will they be left undiscovered only to remain in the realms of mystery and science fiction?

Ben R. Oppenheimer, Curator in the Department of Astrophysics at the American Museum of Natural History, will present. Hat tip: The Space Calendar

Wayne

January 18, 2008

High school students find new asteroid

Universe Today: while doing an astronomical observation project for a class, high school students in Wisconsin discovered a new asteroid, demonstrating once again that astronomy is one of the few disciplines where amateurs can make meaningful contributions. The discovery has been confirmed by the Minor Planet Center in Cambridge, Massachusetts.

Wayne

January 17, 2008

Mercury's surface in detail

En0108821483m The geological features in the image above from MESSENGER's Mercury flyby this week are described in detail in this Planetary Society post, which also includes a photo of the same area taken by Mariner 30 years ago. The differences are stark.

Wayne

January 16, 2008

"How to win a Nobel Prize"

Astronomy Cast is out with a couple of shows, how to win a Nobel Prize and gravitational waves. Thoroughly understanding the latter could get you the former.

Wayne

January 15, 2008

2008 launch calendar

Nancy Atkinson at Universe Today runs down the 2008 launch calendar, which includes a number of scientific missions as well as links to their respective web sites.

Wayne

January 08, 2008

"Most stunning photo ever taken"

2230_6162_1As noted here earlier, CICLOPS, the organization and people responsible for the breathtaking images taken by Cassini as it moves among Saturn and its moons, held a contest so the public could choose its favorite picture.

The results are in.

The winning color image, which shows an eclipse of the sun as seen from the other side of Saturn, is shown above. Nestled just inside the outermost ring on the left side of the picture (click to enlarge) is our home, Earth.

Cosmic Log's Alan Boyle has much more on the story, including a link to comments from Steven Pinker, who called it "the most stunning photograph ever taken" in this post

An image roughly 2700 x 1300 pixels can be found here. It's currently saved as my Macbook desktop.

Wayne

January 07, 2008

Can you spare some clock cycles? You can do science!

Would you like to participate directly in one of the world's largest science projects?

SETI@home is looking for a few good volunteers. By downloading and running some software from SETI your spare computing capacity - be it your home desktop or road-warrior notebook - can be used to help analyze information coming from the world's largest radio telescope in Arecibo, Puerto Rico. Currently 170,000 people and 320,000 computers are helping to crunch the data.

More on the request can be found in this news release.

Would you rather help design proteins to fight diseases? Check out other projects to which you and your computer might contribute.

Wayne

Searching for the Higgs-Boson

I've pointed this out before, but Astronomy Cast is a nice podcast an astronomical topics. For someone with a developing casual interest in the topic, I've found it very accessible. The latest show is on the search for the Higgs-Boson, the last undiscovered particle predicted by the standard model of physics.

The show is also annotated with several links of interest, including a pointer to this interactive guide to particle physics geared toward middle school students.

The link also appears in "space education" list on the right side of the web log.

Wayne

January 03, 2008

Mars asteroid impact

The chance of an asteroid impact on Mars is now 1 in 28, according to the Planetary Society Weblog, which cites NASA's Near Earth Object Program. The original news story is here.
 

Wayne

December 28, 2007

"Alone with the Giant"

I'm posting the latest release from CICLOPS just because it's so beautiful. Can you spot Epimetheus in the  picture?

Teachers, the great thing about the images from CICLOPS and the Mars Reconnaissance Orbiter imaging team, HiRISE, is that with simple credit - like the line found at the bottom of this image - the pictures may be freely used. I bet like me many years ago, there is a student in your class to whom these kinds of images would really speak.

Wayne

3952_10241_1

Credit: NASA/JPL/Space Science Institute.

November 13, 2007

Spitzer spies stellar bubble blower

Sig07022_medium The Spitzer Space Telescope has spied a stellar bubble blower.

Scientists believe that the jets of gas, moving at 200 to 300 kilometers per second, indicate that the new star has stopped growing. The star is the white object near the center of the image.

According to Dr. Thangasamy Velusamy of NASA's Jet Propulsion Laboratory in Pasadena, Calif., baby stars and their potential planet-forming disks grow by gravitationally pulling in and absorbing surrounding gas and dust. Scientists suspect that these disks stop growing when the central baby star develops powerful winds and jets that blow away surrounding material (link supplied).

The image thus represents one stage of the life cycle of a star.

Image credit: "Baby Star HH 46/47," NASA/JPL-Caltech/T. Velusamy (Jet Propulsion Laboratory)

Wayne

November 09, 2007

Astrodemocracy, Orion, Antimatter

Dione Dr. Pamela Gay, a.k.a, "Star Stryder," reports on a burgeoning astrodemocracy. Dr. Gay, who is also behind Astronomy Cast series, says that the show will soon begin a 30 minute "student questions" podcast series relat