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April 2008 Top Stories


»» Discovery of Abundant Cellulose Microfibers Encased in 250 Ma Permian Halite: A Macromolecular Target in the Search for Life on Other Planets

Discovery of Abundant Cellulose Microfibers Encased in 250 Ma Permian Halite: A Macromolecular Target in the Search for Life on Other Planets [Wednesday, April 2, 2008] These cellulose microfibers represent the oldest native biological macromolecules to have been directly isolated, examined biochemically, and visualized (without growth or replication) to date.



»» The (Super)Wasp Factory Finds 10 New Planets In The Last 6 Months

The (Super)Wasp Factory Finds 10 New Planets In The Last 6 Months [Wednesday, April 2, 2008] An international team of astronomers has found 10 new "extra solar" planets, planets that orbit stars other than our sun.



»» Astronomers Find Embryonic Planet

Astronomers Find Embryonic Planet [Wednesday, April 2, 2008] Using radio observatories in the UK and US and computer simulations, a team of astronomers have identified the youngest forming planet yet seen.



»» Report: Managing Space Radiation Risk in the New Era of Space Exploration

Report: Managing Space Radiation Risk in the New Era of Space Exploration [Friday, April 4, 2008] For astronauts there is one danger in space that does not end when they step out of their spacecraft. The radiation that permeates space unattenuated by Earth's atmosphere and magnetosphere.



»» For the paper trail of life on Mars or other planets, find cellulose

For the paper trail of life on Mars or other planets, find cellulose [Saturday, April 5, 2008] Looking for evidence of life on Mars or other planets? Finding cellulose microfibers would be the next best thing to a close encounter, according to new research from the University of North Carolina at Chapel Hill.



»» Meteorites delivered the 'seeds' of Earth's left-hand life

Meteorites delivered the 'seeds' of Earth's left-hand life [Sunday, April 6, 2008] Flash back three or four billion years. Without warning, a meteor slams into the desert plains at over ten thousand miles per hour. With it, this violent collision may have planted the chemical seeds of life on Earth.



»» New Laser Technology Could Find First Earth-like Planets

New Laser Technology Could Find First Earth-like Planets [Monday, April 7, 2008] A revolutionary laser technology being developed by scientists and engineers at the Harvard-Smithsonian Center for Astrophysics (CfA), with colleagues at MIT, will enable scientists to spot Earth-sized worlds in Earth-like orbits.



»» Rate Measurements of the Hydrolysis of Complex Organic Macromolecules in Cold Aqueous Solutions: Implications for Prebiotic Chemistry on the Early Earth and Titan

Rate Measurements of the Hydrolysis of Complex Organic Macromolecules in Cold Aqueous Solutions: Implications for Prebiotic Chemistry on the Early Earth and Titan [Wednesday, April 9, 2008] Organic macromolecules ("complex tholins") were synthesized from a 0.95 N2 / 0.05 CH4 atmosphere in a high-voltage AC flow discharge reactor.



»» A Quantitative Evaluation of the Iron-Sulfur World and Its Relevance to Life's Origins

A Quantitative Evaluation of the Iron-Sulfur World and Its Relevance to Life's Origins [Wednesday, April 9, 2008] The significance of Waechtershaeuser's iron-sulfur world to the origin of life and the limits to its notional autocatalytic cycles are examined in kinetic simulations of the chain polymerization sequence



»» Glycine Identification in Natural Jarosites Using Laser Desorption Fourier Transform Mass Spectrometry: Implications for the Search for Life on Mars

Glycine Identification in Natural Jarosites Using Laser Desorption Fourier Transform Mass Spectrometry: Implications for the Search for Life on Mars [Wednesday, April 9, 2008] The jarosite group minerals have received increasing attention since the discovery of jarosite on the martian surface by the Mars Exploration Rover Opportunity.



»» On the Survivability and Detectability of Terrestrial Meteorites on the Moon

On the Survivability and Detectability of Terrestrial Meteorites on the Moon [Wednesday, April 9, 2008] Materials blasted into space from the surface of early Earth may preserve a unique record of our planet's early surface environment.



»» H2O2-H2O Hypothesis for Life on Mars with the TEGA Instrument on the Phoenix Lander

H2O2-H2O Hypothesis for Life on Mars with the TEGA Instrument on the Phoenix Lander [Wednesday, April 9, 2008] In the time since the Viking life-detection experiments were conducted on Mars, many missions have enhanced our knowledge about the environmental conditions on the Red Planet.



»» The Astrobiology Science Conference, 2008

The Astrobiology Science Conference, 2008 [Wednesday, April 9, 2008] The 5th Astrobiology Science Conference (AbSciCon08), hosted by the SETI Institute, brings together a community of scholars, students, and educators that is as vigorous and intellectually diverse as ever.



»» New rocky planet found in constellation Leo

New rocky planet found in constellation Leo [Friday, April 11, 2008] The new planet, which lies at a distance of 30 light years from the Earth, has a mass five times that of our planet but is the smallest found to date. One full day on the new planet would be equivalent to three weeks on Earth.



»» Geologists Discover New Way of Estimating Size and Frequency of Meteorite Impacts

Geologists Discover New Way of Estimating Size and Frequency of Meteorite Impacts [Friday, April 11, 2008] Scientists have developed a new way of determining the size and frequency of meteorites that have collided with Earth.



»» McGill High Arctic Research Station (MARS) Status Report - Dale Andersen: 12 April 2008

McGill High Arctic Research Station (MARS) Status Report - Dale Andersen: 12 April 2008 [Sunday, April 13, 2008] "I have to go hit the road via snowmobile to get back to the McGill High Arctic Research Station (MARS) which is where we are staying. It is not far, but it is a bit cool right now -25C - which for this time of year is not too bad."



»» Astronomers 'listen' to an exoplanet-host star and find its birthplace

Astronomers 'listen' to an exoplanet-host star and find its birthplace [Tuesday, April 15, 2008] By studying in great detail the 'ringing' of a planet-harbouring star, a team of astronomers using ESO's 3.6-m telescope have shown that it must have drifted away from the metal-rich Hyades cluster.



»» Space Radiation May Cause Prolonged Cellular Damage to Astronauts

Space Radiation May Cause Prolonged Cellular Damage to Astronauts [Tuesday, April 15, 2008] A study from the Lombardi Comprehensive Cancer Center at Georgetown University Medical Center demonstrates that the high-energy radiation found in space may lead to premature aging and prolonged oxidative stress in cells.



»» George P. Mitchell Leads A&M and UT Partnership for Giant Magellan Telescope

George P. Mitchell Leads A&M and UT Partnership for Giant Magellan Telescope [Wednesday, April 16, 2008] The GMT will be the world's largest telescope -- one so powerful that it is expected to give perhaps the first definitive answer as to whether or not there is life beyond Earth.



»» Study heats up 'snowball Earth' debate

Study heats up 'snowball Earth' debate [Wednesday, April 16, 2008] Research by University Professor Richard Peltier of physics reveals that the Earth's surface 700 million years ago may have been warmer than previously thought.



»» Is there anybody out there?

Is there anybody out there? [Wednesday, April 16, 2008] Is there anybody out there? Probably not, according to a scientist from the University of East Anglia. A mathematical model produced by Prof Andrew Watson suggests that the odds of finding new life on other Earth-like planets are low.



»» McGill High Arctic Research Station (MARS) Status Report - Dale Andersen: 16 April 2008

McGill High Arctic Research Station (MARS) Status Report - Dale Andersen: 16 April 2008 [Wednesday, April 16, 2008] "Here are a few more pictures and words for you regarding the CSA/McGill University Satellite system here at the CSA camp at Expedition Fiord on Axel Heiberg."



»» Taking the plunge - Space robot headed for test in Antarctic lake

Taking the plunge - Space robot headed for test in Antarctic lake [Monday, April 21, 2008] Nicknamed ENDURANCE, for Environmentally Non-Disturbing Under-ice Robotic ANtartic Explorer, the $2.3 million project will send an autonomous underwater vehicle (AUV) to Lake Bonney for two field seasons, beginning in November 2008.



»» Glaciers Reveal Martian Climate Has Been Recently Active

Glaciers Reveal Martian Climate Has Been Recently Active [Wednesday, April 23, 2008] Brown University researchers have found compelling evidence of thick, recurring glaciers on Mars, a discovery that suggests that the Red Planet's climate was much more dynamic than previously believed - and could change again.



»» NASA's 50th Anniversary Lecture By Professor Stephen Hawking

NASA's 50th Anniversary Lecture By Professor Stephen Hawking [Monday, April 28, 2008] "DR. HAWKING: Spreading out into space will have an even greater effect. It will completely change the future of the human race and maybe determine whether we have any future at all."



»» Before fossil fuels, Earth's minerals kept CO2 in check

Before fossil fuels, Earth's minerals kept CO2 in check [Tuesday, April 29, 2008] A study published in the advance online edition of Nature Geoscience links the pre-human stability to connections between carbon dioxide in the atmosphere and the breakdown of minerals in the Earth's crust.



»» Scientists make chemical cousin of DNA for use as new nanotechnology building block

Scientists make chemical cousin of DNA for use as new nanotechnology building block [Tuesday, April 29, 2008] In the rapid and fast-growing world of nanotechnology, researchers are continually on the lookout for new building blocks to push innovation and discovery to scales much smaller than the tiniest speck of dust.



»» Like Martian Water for Chocolate

Like Martian Water for Chocolate [Tuesday, April 29, 2008] If you smacked a frozen chocolate bar on a table, it would break into bite-size pieces resembling the terrain in this Martian crater.




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