Astrobiology

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 27, 2008

Mars soil contains nutrients for life

NASA's Phoenix Mars Lander has performed its first wet chemistry experiment on the collected Martian soil, returning data showing that it contains many nutrients. It might just be suitable for... asparagus?

Wayne

June 23, 2008

Water ice found on Mars

Wired: Digging into the Martian arctic, the Phoenix Mars Lander has found water ice on Mars.

Wayne

June 02, 2008

Did Phoenix uncover ice at landing site?

Lg_1040Is this material, uncovered when Phoenix's rockets cleared the material on top during landing, ice?

Image source: NASA/JPL/Caltech/University of Arizona/Max Planck Institute

Wayne

May 19, 2008

Phoenix Mars Lander mission offers webcast for schools

According to the Oregon Space Grant Consortium, NASA will be conducting a webcast a portion of the Phoenix Lander mission for schools on Thursday, May 22 as the robot explorer, which will touch down on Mars on May 25, nears the planet. The events of the entry, descent and landing, and the path to Mars so far will be reviewed.

Phoenix's mission is to land at the Mars' north pole, dig into the icy soil looking for the chemical building blocks of life and study the history of water.

But first it much touch down safely on the Red Planet. Here is a very well done video combining animation with expert narration of the challenge getting Phoenix to the ground:

     

Wayne

May 14, 2008

A crewed asteroid mission?

Universe Today: NASA is considering a manned mission to an asteroid that flew near Earth in 2000.

The asteroid mission would act as a "stepping stone" for future planetary missions to Mars and beyond. This three-month trek would provide vital technological, psychological and practical clues to what a manned deep space mission would face. Landing on an asteroid will be very difficult (due to the tiny influence of gravity on such a low-mass body), but it would provide an opportunity for astronauts to mine for water ice, use it for consumption and convert it into its component hydrogen and oxygen (for fuel and breathing). These tests would be essential before sending man on a long-term mission to Mars.

Wayne

May 05, 2008

Where was the water on Mars?

At the Planetary Society, Emily Lakdawalla points to a brand new imaging site, the CRISM Mars imaging site. CRISM - the Compact Reconnaissance Imaging Spectrometer for Mars - uses the spectrum of reflected sunlight to determine the mineralogy of the surface, a technique called reflectance spectroscopy.

It's an important technique because some minerals will only form in the presence of water.

The interactive map is 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 16, 2008

Cassini mission gets extension

Img003039br500 According to a JPL podcast, the Cassini mission has been extended two years, to July of 2010. Twenty-six more encounters with an "Earth-like" Titan, seven more close encounters of the geyser-moon Enceladus (artist's impression above), and three more encounters, one each, with three of the smaller moons are planned, according to Cassini project manager, Bob Mitchell.

Listen to the podcast for a mission recap and news of the extension.

Wayne

Credit: Copyright 2008 Karl Kofoed

April 15, 2008

Parachuting to Mars

Mars_science_lab_chute Unlike previous craft to land on Mars, the Mars Science Laboratory is big - very big. The Universe Today describes the challenge of lowering it through the planet's thin atmosphere to the surface of the planet.

MSL will be the first planetary mission to use precision landing techniques, using a rocket-guided entry with a heat shield to steer itself toward the Martian surface similar to the way the space shuttle controls its entry through the Earth's upper atmosphere. In this way, the spacecraft will fly to a desired location above the surface of Mars before deploying its parachute for the final landing. MSL will use a scaled-up version of parachutes used for the Viking and Mars Exploration Rovers mission. Called a Disk-Gap-Band parachute, the name describes the construction of the parachute: a disk forms the canopy, then a small gap, followed by a cylindrical band.

Carrying a science lab on board, the job of robotic craft will be to uncover evidence for whether the Martian environment could once have been favorable for microbial life.

USA Today also carries a story about the difficulties of the Mars Science Laboratory mission.

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 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

March 31, 2008

Mars' "Grand Canyon"

379260208214963d201hebeschasma_h1 Here is a "perspective view" of Hebes Chasma obtained by the High Resolution Stereo Camera (HRSC) on ESA’s Mars Express spacecraft. According to ESA:

Hebes Chasma is an enclosed trough, almost 8000 m deep, in Valles Marineris, the Grand Canyon of Mars, where water is believed to have flowed.

The Universe Today has more about these images. Photo: ESA

Wayne

March 27, 2008

Enceladus' internal heat mapped

Pia10361_modest

More science from Cassini's recent fly by of Saturn's geyser-moon, Enceladus, is being made available to the public. NASA has just posted this heat map of the southern pole of the satellite.

According to the agency, there is a 200 degree swing (Fahrenheit) between the temperature at the vents and the rest of the surface of the moon.

Wayne

Credit: NASA/JPL/GSFC/SwRI/SSI

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 17, 2008

NASA and the future of planetary science

Along with a number of other presentations at the Lunar and Planetary Science Conference, Pamela Gay live blogged a session on the future of planetary science from NASA Administrator Michael Griffin. It's interesting stuff.

Wayne

February 27, 2008

Planet hunter set for '09 launch

exoplanetwidget.jpgNASA's first ever spacecraft designed to look for Earth-sized planets is on track for a launch a year from this week. According to the PlanetQuest:

Kepler will detect planets indirectly, using the 'transit' method. A transit occurs each time a planet crosses the line-of-sight between the planet's parent star that it is orbiting and the observer. When this happens, the planet blocks some of the light from its star, resulting in a periodic dimming. This periodic signature is used to detect the planet and to determine its size and its orbit.

If you're interested in keeping up to date with the latest discoveries, PlanetQuest has made available a desktop widget, pictured above.

Wayne

February 19, 2008

"Planetary Biology" Internship available

The Oregon Space Grant Consortium post news about a planetary biology internship. The deadline for application is March 3.

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

February 08, 2008

HiRISE taking Mars public

Psp_003545_2025According to information at HiRISE, students at a New Jersey Charter High School helped it select this image. HiRISE is responsible for the images taken by the Mars Reconnaissance Orbiter (MRO).

In addition to click workers, who helped it do tasks that required human perception, such as the ability to recognize patterns, but not a lot of scientific background, the HiRISE project has worked to incorporate the public into its efforts. It should be commended.

If you're interested in other human-based computation efforts, see this list. The popular Galaxy Zoo, which asks ordinary individuals to help classify galaxies, is a favorite of mine.

Lastly, the HiRISE blog mentions a way to get MRO data into Google Earth. Google Mars anyone?

Wayne

Credit: NASA/JPL/University of Arizona

February 05, 2008

Engineers provide interplantary update to Dawn software

Xenonceres_300 Dawn and its ion propulsion system are in inter-planetary cruise, according to Marc Rayman, project system engineer, who in an update on the mission tells a story about dealing with an electrical issue caused by a stray cosmic particle. The distance between the craft and Earth grows by about 1.1 million kilometers a day - the total distance is about 175 times as far as the moon - as it heads toward a rendezvous with Ceres and Vesta, the two largest protoplanets left intact in our solar system. Image credit: McREL

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 11, 2008

Mars Science Lab landing sites narrowed to six

Pia08488_modest According the Universe Today, potential landing sites for the Mars Science Laboratory have been narrowed to six from the 50 proposed by the science community. The roving science lab will examine the soil to assess whether Mars ever was - or is - an environment able to support microbial life.

The image above compares the relative sizes of the the rover compared to the twins Spirit and Opportunity, currently operating on the surface of the planet.

Image credit: NASA/JPL-Caltech

Wayne

November 12, 2007

Rosetta to touch earliest solar history

01802 Universe Today: Making the third of four scheduled planetary encounters to gain speed, Rosetta will sling past Earth tomorrow on its way to an investigation of the Comet 67/P Churyumov-Gerasimenko.

After entering orbit around the comet in 2014, the spacecraft will release a small lander onto the icy nucleus then spend the next two years orbiting the comet as it heads towards the Sun.

The artist's conception above envisions the craft on the comet.

Because they have changed far less than nearby planets, comets offer material undisturbed since the earliest days of the solar system. In addition to landing on the comet and the studying that material, the mission also will require some very interesting maneuvers, not the least of which is the 10 year trip to the comet itself. The Rosetta page at ESA is here.

Wayne

Credits: ESA/AOES Medialab

October 30, 2007

Zeno, black holes, Martian salt

Psp_005680_1525

> In response to a listener question, Astronomy Cast is out with a show on inflation. Just how could the universe have expanded faster than the speed of light in its initial moments? In response to another question, there is also a particularly good quantum explanation of one of Zeno's paradoxes.
> Star Stryder is hosting the carnival of space this week.
> Universe Today: Astronomers believe that there may be super massive black holes at the center of every galaxy.
> The premier issue of Communicating Astronomy with the Public is out with suitably big picture articles such as the Top Ten Astronomical Breakthroughs of the 20th Century.
> Just in from my YouTube subscriptions: Jeff Foust, space journalist and the man behind the blog Personal Spaceflight, has contributed video of Armadillo Aerospace's efforts at the Grumman Lunar Lander Challenge. 
> Are there Ancient salt deposits on Mars? HiRISE has potential photo evidence, above. Credit: NASA/JPL/University of Arizona.

Wayne

Wikipedia: black holes

September 28, 2007

Dawn leaves for asteroid belt

Back_sc_300 NASA's Dawn mission to study two of the largest objects in the asteroid belt, Vesta and Ceres, has begun. Lying between Mars and Jupiter, the two very different bodies offer clues to planetary formation.

Rising_thmb

The craft will arrive at Vesta in 2011 and the dwarf planet Ceres in 2015.

In addition to being the first to orbit two solar bodies, Dawn is also powered by unique ion propulsion system briefly described by Scientific American in its story on the mission.

The C|NET piece on Dawn also contains a number of nice images. You may find the images seen here at NASA.

Top artist's rendering: William K. Hartmann Courtesy of UCLA. Side image: NASA/ Kim Shiflett

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 06, 2007

Russia makes small sat bet

Russia is betting on small sats, according to Space Mart, believing they will contribute to its space program over the next dozen years as well as to fundamental research.

Wayne

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 16, 2007

Working on the moon

170069main_influnarhab01330_2 NASA has selected four astrophysics proposals for science on the moon. According to the news release:

The newly-announced proposals for concept studies may lead to experiments placed on the moon that would allow for unprecedented tests of Einstein's General Theory of Relativity, instruments to probe the early evolution of structure in the universe, and observation of X-rays produced by the charged particles the sun emits, known as the solar wind. Instruments based on these concept studies also would provide unique information on the interior structure of the moon and on Earth-moon interactions.

Related, NewScientist asks "what will future lunar bases look like?" The image above, available at NASA and reproduced in the NewScientist story, is one attempt to answer that question. It's an inflatable lunar module now being evaluated for use. Credit: NASA/Jeff Caplan

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 06, 2007

Phoenix rockets to Mars

The Phoenix Mars Lander rocketed toward the Red Planet Saturday morning aboard a Delta II rocket. Carrying an on-board science lab, it will examine soil and water ice at the planet's polar cap. On its mission page, NASA lists these long term objectives for Mars exploration. 

  • Determine whether Life ever arose on Mars
  • Characterize the Climate of Mars
  • Characterize the Geology of Mars
  • Prepare for Human Exploration The Phoenix Mission has two bold objectives to support these goals, which are to (1) study the history of water in the Martian arctic and (2) search for evidence of a habitable zone and assess the biological potential of the ice-soil boundary.

NASA has made its pre-launch webcast available for playback. In the meantime, check out the animated video of the mission below.

Video of the actual launch is here.

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 24, 2007

Enceladus: Saturn's "icy torch"

Enceladus USA Today has run a nice story about Enceladus' icy surface and its geysers, which make a grand show of releasing water into the vacuum of space. Scientists want to know what's causing the eruptions and whether the conditions might be right for life beneath the moon's icy surface.

On its Planetary Photojournal NASA aptly calls the moon Saturn's "icy torch."

USA Today:

Enceladus, a shining ball of ice hugging Saturn's rings, was first caught in the act of spewing a watery geyser from its south pole two years ago by the international Cassini mission. Water, life's most crucial ingredient, was blasting 270 miles into space, actually hitting the orbiting spacecraft, from cracks on the frozen moon dubbed 'tiger stripes' (hyperlink supplied).

Image: NASA/JPL/Space Science Institute

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 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 launches are currently foreseen for 2017 and 2018 respectively.

The proposals are broken into three categories: "Astrophysics," such as star transits and dark matter studies; "Fundamental physics," a theoretical exploration of time and dimension, for example, or missions to verify the laws of gravity; and science dedicated to exploring further our Solar System.

Wayne