"What evidence exists for the assumption made by Stanley Miller that the atmosphere of early Earth was reducing and not oxidizing?"
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Salt Discovered in Saturn's Outermost Ring
For the first time, scientists working on NASA’s Cassini mission have detected sodium salts in ice grains of Saturn’s outermost ring. Detecting salty ice indicates that Saturn’s moon Enceladus, which primarily replenishes the ring with material from discharging jets, could harbor a reservoir of liquid water — perhaps an ocean — beneath its surface.
Cassini discovered the water-ice jets in 2005 on Enceladus. These jets expel tiny ice grains and vapor, some of which escape the moon’s gravity and form Saturn’s outermost ring. Cassini’s cosmic dust analyzer has examined the composition of those grains and found salt within...
Source: [NASA Press Release]
June 24, 2009 / Posted by: Daniella Scalice
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Sphere
Deep-ESP. Credit: Henry Bortman
A team of researchers at the Monterey Bay Aquarium Research Institute conducted the first field test earlier this year of a new configuration of Deep-ESP. The device is designed to perform long-term studies of how deep-sea ecosystems respond to environmental changes.
The Deep-ESP project – ESP stands for Environmental Sample Processor – will provide scientists with a view of how deep-sea ecosystems respond over time to changes in environmental conditions.Source: [Astrobiology Magazine]
June 15, 2009 / Written by: Henry Bortman
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A New Way to Keep Clean
It is almost impossible to get a spacecraft completely clean before launch. Therefore, missions to other planets carry some risk of forward contamination – where microorganisms from Earth travel along with the spacecraft to its destination. This is a big problem in the search for life on planets like Mars, because you don’t want to contaminate the site you’re going to be studying. To help combat this problem, a team of scientists funded by a NASA ASTEP award have developed a new cleaning protocol that could be used for future missions to Mars and beyond.
Source: [Astrobiology Magazine]
June 9, 2009 / Posted by: Aaron Gronstal
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Probing Antarctica’s Lake Bonney
In a project designed to help NASA plan for a future mission to explore Jupiter’s moon Europa, researchers have begun testing an autonomous underwater vehicle, known as ENDURANCE, in the ice-covered waters of Antarctica’s Lake Bonney. The biggest problem they’ve run into so far? Bubbles.
Source: [Astrobiology Magazine]
May 21, 2009 / Written by: Henry Bortman
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Planetary Science Decadal Survey: White Papers Posted for Comment
Comments are being solicited from members of the astrobiology community on the following paper(s) that will be submitted to the 2009-2011 Planetary Science Decadal Survey. Papers will be revised based on community feedback. Additonal papers will be posted here as they become available.
- Astrobiology Research Priorities for Exoplanets (Last Updated: May 28, 2009)
- Astrobiology Research Priorities for Mercury, Venus, and the Moon (Added: June 8, 2009)
- Astrobiology Research Priorities for Mars (Added: June 10, 2009)
- Astrobiology Research Priorities for the Outer Solar System (Added June 15, 2009)
Please send comments to ps_decadal@nx.arc.nasa.gov no later than...
May 20, 2009 / Posted by: Marco Boldt
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Planetary Science Decadal Survey
Dear Colleague:
This is the first of what will be a regular series of newsletters to the astrobiology community regarding the 2009-2011 Planetary Science Decadal Survey. We all get too much email, so I’ll try to keep these concise!
The key points in this newsletter are these:
1) The decadal survey will establish the priorities for planetary exploration in the U.S. for the coming decade.
2) Astrobiology is a major crosscutting theme of NASA’s planetary science activities and a central facet of the survey’s scientific scope.
3) The process is just getting started, and will...Source: [National Academies Space Studies Board]
April 24, 2009 / Written by: Steve Squyres
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NASA Astrobiology Website is Official Webby Honoree
The NASA Astrobiology Program website has been selected as an Official Honoree of the 13th annual Webby Awards! The International Academy of Digital Arts and Sciences presents Webby Awards and names Official Webby Honorees in 70 categories spanning art, health, music, and science. Of nearly 10,000 entries to the competition, fewer than 15% were selected as honorees, and the NASA Astrobiology Program website shares this year’s distinction in the category of Website/Science with ten other websites including the likes of Seed Magazine, the California Academy of Sciences, and...
April 15, 2009 / Posted by: Daniella Scalice
