Space

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 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

June 11, 2008

Dates for 2008 Lunar Lander Challenge set

The X-Prize Foundation has set the dates for the 2008 Lunar Lander Challenge, according to th blog Beyond 62. The challenge, almost won last year, is designed "to accelerate commercial technological developments supporting the birth of a new generation of Lunar Landers capable of ferrying payloads or humans back and forth between lunar orbit and the lunar surface."

The official release is here.

Wayne

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

April 25, 2008

Spiderweb solar sail

NewScientist has posted this animation of a new kind of solar sail that might use spun, positively charged wires to repel positively charged ions to move through space. A written summary can be found here.

Wayne

 

April 18, 2008

Would we know life if we encountered it?

"Life" is hard to define according to NewScientist's space blog, which points out that there are more than 280 definitions on record. The subject was at the center of a lively discussion at a just-concluded SETI Institute astrobiology conference, which seems apt.

Wayne

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 10, 2008

Phobos closeup

Phobos The larger of Mars' two moons, Phobos, gets a close up from the Mars Reconnaissance Orbiter. "Larger" in this case means 21 kilometers in diameter.

Wayne

Credit: NASA/JPL-Caltech/University of Arizona

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 04, 2008

NASA and the next generation

A newly discovered blog, Open NASA, has posted its take on a Gen-Y panel at the recent Space Exploration Conference. At issue: how to engage this generation in the space sciences and space exploration.

Wired Science and HobbeySpace have more on the session. And NASA Watch has made some very interesting slides available.

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 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 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 08, 2008

Moon racer to be interviewed today

According to the International Space Fellowship, tonight at 10 ET, Dr. Robert Richards, who is the Founder and CEO of Odyssey Moon Limited, will appear on The Space Show. Odyssey Moon is a commercial lunar enterprise and the first official registrant in the $30M Google Lunar X PRIZE competition. It ought to be an interesting interview.

Much more information about Richards can be found using the first link above. Archived audio from the interview should be available in the next few days on The Space Show pages.

Wayne

January 07, 2008

New space elevator video

As the Space Elevator Blog points out, Spaceminer, an entrant in the 2005 and 2006 space elevator games, has posted four videos of its efforts. I'm embedding the first one below.

Wayne

 

December 19, 2007

Top Ten Astro Pics of 2007

101607 Bad Astronomy posts its top ten astropictures of 2007.

My personal favorite is this image above of Io and Europa taken by New Horizons, which is on its way to Pluto. As Phil Plait points out - his commentary on the photos he selected is also very good - the two moons are in reality very far apart. The blue stream you see on Io is the result of the volcano Tvashtar, spewing debris hundreds of kilometers into surrounding space. The red at the base of the volcano is molten sulfur.

Here's a close up of Io that I like.

Check out all of Phil's choices. There are some truly gorgeous images.

Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

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 related to high-energy astrophysics:

Each show will eventually have an illustrated transcript, and questions will also be indexed online by topic. Submitted questions not used in shows will still be answered, but will only appear in the online index. To facilitate educators submitting audio questions, Astronomy Cast can provide recording devices that can be shipped on loan to schools at no cost to them (return postage provided). Teachers are also free to use any existing equipment their school has to send us audio. This program is sponsored by NASA’s Gamma-ray Large Area Space Telescope Education and Public Outreach program.

Space Prizes: is San Jose State University going for the Google Lunar X-Prize?

NASA will host a technology exchange conference, focusing on "transport to the moon, lunar operations and outpost technology" in order to "develop a variety of new capabilities, supporting technologies, and foundational research that enables sustained, affordable, human and robotic space exploration."

Courtesy of Universe Today, take a peek at an aluminum mock-up of the Orion Crew Module.

RLV and Space Transport News links to a couple of Space.com videos from the X-Prize lunar landing competition.

The Kansas City Space Pirates: we just missed.   

Centauri Dreams: Antimatter for Deep Space Propulsion?

The image at top is a newly released image of Dione provided by CiCLOPS, the team responsible for the Cassini imaging system. Credit: NASA/JPL/Space Science Institute

Wayne

October 22, 2007

ESA selects "Vision" candidates

The European Space Agency has selected candidate missions for Cosmic Vision 2015-2025. The selected missions include extended exploration of the Jovian system, an asteroid sample-return mission, a new platform to study dark energy, a new space-borne exoplanetary finder called Plato capable of separating rocky exoplanets from the star glare, and a new collaboration with Japan that would field an infrared observatory to study the origin of the universe.

The European scientific community submitted over 50 proposals to ESA for consideration.

Wayne

October 12, 2007

Life, here: signaled

The Allen Telescope Array is scheduled to go online Thursday, according to the New York Times.

The array will help search for new phenomena like black holes eating each other and so-called dark galaxies without stars, as well as extend the search for extraterrestrial radio signals a thousandfold, to include a million nearby stars over the next two decades.

Funding for 42 the relatively inexpensive antennas came from Microsoft co-founder of Microsoft Paul Allen, who said that if the array receives signals, SETI will make the first call to him.

Wouldn't that be something?

The SETI press release is here.

Wayne

October 09, 2007

"A Jules Verne adventure come true"

Go on a 17 minute exploration of the Saturn system in this archived TED presentation. Planetary scientist and leader of the imaging team for the Cassini-Huygens mission, Carolyn Porco, describes the mission, and in particular the Huygens' descent to Titan, as a "Jules Verne adventure come true." If like me you are captivated by images of other worlds, you'll enjoy this visual feast.

Wayne

September 24, 2007

Carnegie Mellon seeks Moon prize

Spitzer_corona_australis Links for your Monday.

The image above is of a star-forming region called Coronet Australis that was recently captured by the Spitzer Space Telescope. Image credit: NASA/CXC/JPL-Caltech/CfA

Wayne

September 21, 2007

Explore! The week in news

Iapetus_himalayas The latest Carnival of Space is up and guess what story is dominating the news? Not willing to wait, Advanced Nanontechnology has already outlined how to win the $30 million Google Lunar Lander X Prize.

Other stories not included in the latest iteration of the space carnival include Paul Gilster's piece on Tau Ceti, which asks the question: what should the constant bombardment of potential planets in the dust belt surrounding that star tell us about the development of life on Earth?

The European Space Agency's super-chilled infrared observatory, Herschel, designed to register the faintest heat objects in the most distance past, is one step closer to being ready to fly.

Wired reports that NASA's GLAST is designed to peer into every corner of the universe as well, looking for the sources of gamma-ray radiation, the kinds of fantastic energy produced by merging neutron stars, for example. Wired's science blog also links to Scientific American articles on the future of space travel and the hard choices NASA may face - funding for every worthy goal simply isn't available.

Lastly, the image above is from Cassini's recent very close flyby of Iapetus, one of Saturn's moons. The image is of its "Himalayas." In this press release from NASA, the moon is characterized as the "Yin-and-Yang moon." Image Source: CICLOPS, the Cassini Imaging Team.

Wayne

September 11, 2007

Dark energy probe selected

What makes up the other 74 percent of the universe?

According news from PhysOrg.com, the National Research Council has selected one of three competing Dark Energy Missions - the SuperNova/Acceleration Probe, or SNAP - to be the first Beyond Einstein cosmology mission developed and launched.

SuperNova/Acceleration Probe, or SNAP [is] a versatile space-borne observatory with a powerful two-meter-class telescope and a half-billion pixel imager, designed to study dark energy by recording the distance and redshift of some 2,000 Type Ia supernovae a year and mapping the sky with unprecedented resolution. Dark energy is the name given to the mysterious entity which is causing the universe to expand ever more rapidly. It accounts for nearly three-quarters of all the energy in the universe.

In addition to comparing the redshift of supernovae, the craft will also employ "weak gravitational lensing." According to  SNAP's co-principle investigator and project director, Michael Levi:

'Weak gravitational lensing has been part of the SNAP concept since its beginning in 1999. SNAP will make a high-resolution map of the sky covering an area 2,000,000 times larger than the Hubble Deep Field. This map will be sensitive to the minute distortions of distant galaxy shapes when their light passes through uneven distributions of matter — a phenomenon called weak lensing. Weak lensing promises a powerful way to measure the distribution of dark matter and to probe dark energy's effect on the growth structure of the universe. The huge survey map will also provide astronomers with an unparalleled wealth of high-resolution images never before seen.'

There are three Beyond Einstein missions planned, the Joint Dark Energy Mission, described here, and the Inflation Probe and Black Hole Finder Probe.

Wayne

Wikipedia: Dark Energy, gravitational lens

September 05, 2007

Herschel to study earliest heat

Science Daily has posted an update on Herschel, the European Space Agency's far-infrared space observatory. Designed to study the evolution of galaxies and stars by recording light at far-infrared wave lengths, the craft is built to exacting tolerances. This paragraph suggests the engineering challenge to produce images from the earliest radiated heat:

In order to achieve its objectives and to be able to detect the faint radiation coming from the coolest objects in the cosmos, otherwise ‘invisible’, Herschel’s detectors must operate at very low and stable temperatures.

The spacecraft is equipped so as to cool them close to absolute zero (-273.15 ºC), ranging from -271 ºC to only a few tenths of a degree above absolute zero. To have achieved this particular feature alone is a remarkable accomplishment for European industry and science.

Like the Spitzer Space Telescope, Galaxy Evolution Explorer and ESA's Planck missions, efforts to observe the deepest space in order to answer the biggest questions really interest me.

A July 2008 launch is expected. A mission summary is here.

Wayne

Wikipedia: infrared astronomy Caltech: Cool Cosmos

August 31, 2007

Spitzer detects water vapor

Spitzerseeswater According to text accompanying the newly released graph above, the Spitzer Space Telescope has detected the strong signature of water vapor in another star system, NGC 1333-IRAS 4B.

Source: NASA/JPL-Caltech/Harvard-Smithsonian CfA        

Wayne

August 28, 2007

Voyager: into the deep

Bubblebig In a news release, JPL commemorates 30 years of Voyagers' flight and issues a new podcast, Voyager: is the Best Yet to Come?

Launched in 1977, both craft are healthy and communicate regularly with Earth, sending information about their surroundings through the Deep Space Network.

In ten years, Voyager 1 will reach heliopause, and from there pass cross the threshold to intersteller space carrying a message for the deep. 

Wayne

Hat tip: Centauri Dreams

August 27, 2007

Finding a hole in the universe

Not a black hole, not anything, really, University of Minnesota astronomers have discovered a gaping hole in the universe that is nearly a billion light years across, which is "empty of both normal matter such as stars, galaxies and gas, as well as the mysterious, unseen 'dark matter.'"

This nothing may turn out to be a big something.

Wayne

August 17, 2007

Star sports comet-like tail

Amirafull Using ultraviolet light, the Galaxy Evolution Explorer has spotted a trail of material 13 light years long behind a well known star to astronomers, Mira.

Once again, thanks to Centauri Dreams for the great link. Go check out what Paul Gilster has to say about the significance of the finding.

The Wikipedia entry for the star has already been updated with the new information. Google news has quite a bit about the story.

What a beautiful image!

Wayne

August 14, 2007

"A star unlike any before"

170993main_novagalex516 At 1p today, NASA is scheduled to deliver an announcement from Galaxy Evolution Explorer "about a star unlike any seen before." Supporting images and graphics will appear here.

CalTech's Galaxy Evolution Explorer (GALEX) is an orbiting space telescope that observes galaxies in ultraviolet light across 10 billion years of cosmic history.

The image above is some of its handiwork, a picture of the remnants of a nova from a few thousand years ago. Image credit: NASA/JPL-Caltech

Wayne

August 07, 2007

Robots, asteroids and Charon

The most recent Carnival of Space links to some particularly good articles.

They including whether robots or humans should explore space, the possibility of a lunar observatory, recent news from Cassini about a tiny moon of Saturn, Helen, landing on asteroids, water detected on Pluto's companion, Charon, and how nanotechology might permit the building of "worldships" from - who else? - Centauri Dreams.

There are many, many more at Music of Spheres, the current carnival host, so have a look.

The submission deadline for space stories for Carnival of Space is each Wednesday at 6p PST. I hope sometime soon to add to the mix with an article on our own Kentucky Satellite program.

Wayne

August 02, 2007

Space linkage today

Cerberus_fossae_fracture Credit: NASA/JPL/University of Arizona

Wayne

August 01, 2007

Darwin hunts planets

ESA's Darwin Proposal is now online, according to Centauri Dreams. Darwin's schedule has slipped because the technology being considered for use has not yet been fully developed, but its terrestrial planet-hunting mission holds the potential for a reward commensurate with the challenge.

Paul Gilster:

According to the proposal, the baseline DARWIN mission is to last five years and will target approximately 200 individual stars at mid-infrared wavelengths. The focus is on stellar types F, G, K and some M stars (about ten percent of the total). Of these, between twenty-five and fifty planets will be studied spectroscopically for evidence of gases such as CO2, O3 and H20. The mission planners are currently assuming the number of terrestrial planets in the habitable zone is one per system, adding that data from NASA’s Kepler mission will be useful in evaluating this conclusion.

Paul lists a number of other projects that are like Darwin in scope or technology or both. Among them are COROT, which is already operational, Kepler, and a Swedish proposal called Prisma, intended, according to its web site, to demonstrate "guidance/navigation strategies for Rendezvous and Formation Flying in space."

The post drew several responses on the relative merits of Big Science v. smaller missions that are also worth reading if you get the chance.

Wayne

July 20, 2007

Beauty of aerospace design

153736main_ares_i_labeled Next week NASA will be participating in the biggest aviation reunion going - Oshkosh - to show off the beauty of aerospace design. From the press release:

Air show visitors will see sights from the launch pad as well as the laboratory at the NASA pavilion. Outside the pavilion, visitors can view a 1-15th scale, 26-foot-tall model of America's next manned rocket, the Ares I. NASA plans to offer daily lift offs of a 1-100th scale Ares I model. The 40-inch long rocket can fly as high as 800 feet....

Returning this year by popular demand are craftsmen from NASA's Langley Research Center in Hampton, Va. The craftsmen will talk with visitors about model-making techniques and how they contribute to spacecraft designs. Space shuttle tiles, rocket models, a section of an inflatable space structure and an unmanned helicopter model also will be on display.

More information about NASA's exhibit is here. An image of Ares 1 appears to the right of this post. Image credit: NASA

Wayne

July 19, 2007

Space destinations on the Web

Opportunityrovertracksvictoriacrate Links for Today:

  • Jeff Foust at Personal Spaceflight points out that the Select Committee on Science and Technology of the British Parliament issued a report on UK space policy that includes a section on space tourism.
  • Cosmic Log points to "must-see science" on the Web.
  • Planet Quest interviews the manager of the Michelson Science Center at Caltech, Dr. David Imel, who expresses his belief that we'll find another Earth-like planet in his life time.
  • The High Resolution Imaging Science Experiment (HiRISE) has released another group of terrific images taken from the Mars Reconnaissance Orbiter of Mar's surface geology. In the image above, one can actually see Opportunity's tracks at Victoria Crater, which the rover is set to explore.
  • JPL has released a video update of Cassini's Saturn mission. Today, Cassini will take more measurements of the surface of Titan very near where Huygens' landed on the moon. Titan images, including some from Huygens' descent, may be found here.

Wayne

July 18, 2007

Mars: it's in the math

The New York Times has published a piece, "Fulfilling Our Statistical Destiny," which applies some interesting math to human destiny. The unusual thing about the methods of Dr. J. Richard Gott III, an astrophysicist at Princeton, is that using a statistical method he developed he has been pretty accurate.

Dr. Gott has used his technique to successfully forecast the longevity of Broadway plays, newspapers, dogs and, most recently, the tenure in office of hundreds of political leaders around the world. He bases predictions on just one bit of data, how long something has lasted already; and on one assumption, that there is nothing special about the particular moment that you’re observing this phenomenon. This assumption is called the Copernican Principle, after the astronomer who assumed he wasn’t seeing the universe from a special spot in the center.

His deep statistical conclusion? In order to improve the odds for long term survival, Mars is in the math. The entire article makes for provocative reading if you get the chance.

Wayne

Wikipedia: Nicolaus Copernicus, Probability Theory

July 16, 2007

Largest telescope now online

The world's largest optical telescope collected its first light last Friday. Boasting a main mirror over 10 meters across, the Great Canary Telescope (it is situated on the island of La Palma, part of the Canary Islands) cost $180 million to construct.

Wayne

July 13, 2007

"Hot Jupiters" show water vapor

According to Centauri Dreams, the Spitzer space telescope has obtained additional spectra of exoplanetary light from two "hot Jupiters," HD 189733b and HD 209458b, that shows "the clear signature of water."

Earlier observations had failed to turn up such evidence.

The planets are far too hot to contain liquid water, but the presence of vapor may, as Paul Gilster points out, indicate that H2O is a common element in at least one other solar system.

Wayne

July 12, 2007

"Cosmic Vision:" 50 big missions

The European Space Agency (ESA) has made note of 50 new mission concepts received in response to a challenge to the European scientific community. ESA:

Out of these 50 concepts, three medium-class missions (with costs to ESA not exceeding 300 million euros) and three large-class missions (with costs to ESA not exceeding 650 million euros) will be selected for assessment (or feasibility) studies starting in October this year.

The selection will follow a careful evaluation process, taking into account the scientific value and novelty of the proposal as main criteria, together with its technological maturity and its estimated cost.

At the end of the full assessment cycle in 2011, one medium- and one large-class mission will be adopted for implementation by ESA's Science Programme Committee. Their lau