Wrinkle structures reproduced in the laboratory. by moving microbial aggregates on a bed of loose fine sand. The total width of the image is 30 cm. Credit: Mariotti et al. 2014
A new study shows how wrinkle structures can form on a bed of sand when waves and microorganisms are present. Wrinkle structures on sandy bed surfaces are rare on Earth today, but were more common in ancient sedimentary environments. These ancient sediments often have trace fossils and imprints of early animals, and appear in the geological record after some of the largest mass extinctions on Earth.
Some scientists have ...Today / Written by: Aaron Gronstal
The young Earth differed markedly from today’s world. Credit: NASA
Geological evidence tells us that ancient Earth probably looked and felt very different from the planet we all recognize today. Billions of years ago, our world was a comparatively harsh place.
Thanks to advances in a niche field called paleobiochemistry, researchers in the last decade have started to “resurrect” ancient proteins. Studying these proteins’ properties is offering us glimpses of what life was like in bygone epochs. A new study published in the journal Proteins: Structure, Function, and Bioinformatics explores how such 'resurrection studies’ can provide evidence to support ...
Primary deployment test of MOM's three-fold solar panel prior to launch. Credit: ISRO
India has become the fourth nation to successfully deliver a spacecraft to Mars. The Mars Orbiter Mission (MOM) is the country’s first interplanetary mission and will collect data about martian surface features, morphology and mineralogy. The spacecraft will also search for signs of methane gas in the atmosphere.
A statement from Lisa May, program executive for the Mars Atmosphere and Volatile Evolution (MAVEN) mission in NASA’s Science Mission Directorate (SMD):
“NASA’s Mars Exploration Program is very excited to have new neighbors at Mars ...September 26, 2014 / Posted by: Aaron Gronstal
An illustration of water in our Solar System through time from before the Sun’s birth through the creation of the planets. Credit: Bill Saxton, NSF/AUI/NRAO
A new study published in Science looks beyond the question of whether Earth’s oceans can be traced to comets or other objects from space, and instead asks the question: where did the water in comets come from? The answer: some of it, maybe even a majority, is interstellar, and either survived the formation of our Sun and planetary disk or migrated here at a later time. The findings could have important ...
A light wave can be roughly imagined as a single line that wiggles up and down. If circular polarization occurs, this line rotates as the wave moves. Circular polarization of light when it interacts with dust might help identify molecules relevant to the origins of life. Image Credit: Wikimedia Commons
Dust particles can be found everywhere in space, but what can dust tell us about life’s potential in the Universe? By modeling how light scatters when it interacts with dust particles, researchers supported by the Exobiology & Evolutionary Biology are looking at ways of determining whether or ...September 25, 2014 / Posted by: Aaron Gronstal
Members of the mission team at the Lockheed Martin Mission Support Area in Littleton, Colorado, celebrate after successfully inserting NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft into orbit around Mars at 10:24 p.m. EDT Sunday, Sept. 21. Image Credit: Lockheed Martin
NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft successfully entered Mars’ orbit at 10:24 p.m. EDT Sunday, Sept. 21, where it now will prepare to study the Red Planet’s upper atmosphere as never done before. MAVEN is the first spacecraft dedicated to exploring the tenuous upper atmosphere of Mars.
Source: [NASA]September 22, 2014 / Posted by: Aaron Gronstal
This week’s Science Nation video features research at the Center for Chemical Evolution (CCE), headquartered at Georgia Tech. Nicholas Hud and a team from the CCE are working to understand the origins of life on Earth by studying how chain-like chemicals called polymers first came together to form RNA and DNA.
Source: [NSF]September 16, 2014 / Posted by: Aaron Gronstal
This artist's concept shows NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft orbiting Mars. Image Credit: NASA/Goddard Space Flight Center
NASA will be hosting a televised media briefing at 1 pm EDT on September 17 to outline activities around the upcoming orbital insertion of the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft. The briefing will be held in NASA’s Headquarters’ auditorium in Washington DC, and broadcast live on NASA Television and the agency’s website.
The public will be able to ask questions on social media using the hashtag #askNASA.
Panelists include: Lisa May (lead program ...September 16, 2014 / Posted by: Aaron Gronstal
The first symposium of AbGradE (Astrobiology Graduates in Europe) will be streamed live on SAGANet October, 9th-10th at http://saganet.org/page/saganlive
The purpose of AbGradE is to start a network of early-career astrobiologists in Europe. Yearly symposia will be organized where young researchers can meet, attend background lectures, and present their work and ideas in front of their peers in a pressure-free environment.
The group emerged in response to the rising need for multidisciplinary collaborations and for the creation of a solid scientific and social network across the astrobiological scene. It will also strive to set a common ...September 15, 2014 / Written by: Julie Fletcher
Not every planet in or near a habitable zone is habitable. Inhospitable Venus is an excellent example. Credit: NASA/JPL/Caltech
A new study explores how distant analogs to Venus might be detected and differentiated from Earth-like planets. Discovering a twin to Venus could help astrobiologists identify systems similar to our own Solar System and narrow the search for habitable worlds around distant stars.
The work was supported by the NASA Astrobiology Institute’s Virtual Planetary Laboratory and published in Astrophyiscal Journal Letters.
Dr. Shawn Domagal-Goldman of NASA’s Goddard Space Flight Center and co-author of the study recently spoke ...
Left: Ozone molecules in a planet's atmosphere could indicate biological activity, but ozone, carbon dioxide and carbon monoxide -- without methane, is likely a false positive. Right: Ozone, oxygen, carbon dioxide and methane -- without carbon monoxide, indicate a possible true positive.
Astronomers searching the atmospheres of alien worlds for gases that might be produced by life can’t rely on the detection of just one type, such as oxygen, ozone, or methane, because in some cases these gases can be produced non-biologically, according to extensive simulations by researchers in the NASA Astrobiology Institute’s Virtual Planetary Laboratory. The study appears ...
An Arizona State University alumna has devised the largest catalog ever produced for stellar compositions. Called the Hypatia Catalog, after one of the first female astronomers who lived ~350 AD in Alexandria, the work is critical to understanding the properties of stars, how they form, and possible connections with the formation and habitability of orbiting planets. And what she found from her work is that the compositions of nearby stars aren’t as uniform as once thought.
Since it is not possible to physically sample a star to determine its composition, astronomers study of the light from the object. This ...September 10, 2014 / Posted by: Daniella Scalice
Discoveries of new, potentially habitable worlds beyond our solar system raise challenging questions for humanity vis-a-vis faith, human nature, reality and religion. This discussion, hosted at the Library of Congress in Washington, DC on June 18, 2014, addresses the complex intersection of astrobiology and theology as part of the Kluge Center’s astrobiology program and features scholars from the Library, George Washington University, and Princeton.September 8, 2014 / Posted by: Daniella Scalice
Clouds that are probably composed of ice crystals and possibly supercooled water droplets were caught in images by NASA’s Opportunity rover. Credit: NASA/JPL/Texas A&M/Cornell
Curiosity celebrated two years on Mars on August 5, 2014, and is continuing its progress across the surface of the planet. In a tweet on September 2, 2014, Curiosity shared its view of the path ahead and proclaimed, “Head for the hills! I’m driving towards these hills on Mars to do geology work & also search for clouds.”
In this news post from astrobio.net, Dr. Robert M. Haberle, Planetary Scientist at NASA Ames and a team member for the Rover Environmental Monitoring Station (REMS), explains why clouds on Mars are relevant to Curiosity’s astrobiology goals.Curiosity tweeted this image from the surface of Mars on Sept 2, 2014. Credit: NASA, @MarsCuriosity
REMS is an environmental monitoring station and was contributed to the Mars Science Laboratory (MSL) mission by the Centro de Astrobiologia (CAB) in Spain, one of the NASA Astrobiology Institute’s international partners.
Source: [astrobio.net]September 8, 2014 / Written by: Aaron Gronstal
Deadline to submit Session Topics is October 22, 2014
The Astrobiology Science Conference 2015 (AbSciCon2015) Science Organizing Committee is soliciting community input for Session Topics and Session Organizers. Given the wide variety of disciplinary tools and topics to be presented at the conference, the success of AbSciCon 2015 will be built upon the community’s involvement in the organization of topical sessions. Community members are urged to be proactive in proposing sessions, merging similar session topics, and organizing abstracts into selected sessions.
To submit a session topic and to see the list of submissions visit: http://www.hou.usra.edu ...September 3, 2014 / Written by: Julie Fletcher
- October 1 - Application Deadline for ESA Postdoctoral Fellowships in Space Science
- October 1 - Application Deadline for NASA Astrobiology Program Early Career Collaboration Award
- October 9 - Watch Astrobiology Graduates in Europe (AbGradE) Symposium Live
- October 13 - Moscow International Solar System Symposium (5M-S3)
- October 22 - Deadline for Session Topics and Organizers for Astrobiology Science Conference (AbSciCon) 2015
- October 31 - Application Deadline for 2015 Exploration Postdoctoral Fellowship Opportunity at ASU
- November 1 - Application Deadline for NASA Astrobiology Postdoctoral Fellowship Program
- November 1 - Workshop on the Modern Analytical Methods Applied to Earth Planetary Sciences
- November 4 - 2nd International Workshop on 'Instrumentation for Planetary Missions' (IPM-2014)
- November 6 - Application Deadline for Sagan Postdoctoral Fellowships
- November 12 - Proposal Deadline for 2014 NASA EONS Solicitation New Appendix
- November 13 - Proposal submission deadline for East Asia and Pacific Summer Institutes for U.S. Graduate Students (EAPSI)