Saturn's moon Titan is the only world in our solar system other than Earth that has stable liquid on its surface. The liquid in Titan's lakes and seas is mostly methane and ethane.
NASA’s Cassini spacecraft is providing scientists with key clues about Saturn’s moon Titan, and in particular, its hydrocarbon lakes and seas.
Titan is one of the most Earth-like places in the solar system, and the only place other than our planet that has stable liquid on its surface.
Cassini’s recent close flybys are bringing into sharper focus a region in Titan’s ...December 19, 2013 / Posted by: Daniella Scalice
This mosaic of images from the Mast Camera (Mastcam) instrument on NASA's Curiosity Mars rover shows a series of sedimentary deposits in the Glenelg area of Gale Crater, from a perspective in Yellowknife Bay looking toward west-northwest. Image Credit: NASA/JPL-Caltech/MSSS
Six new papers outlining science results from NASA’s Curiosity rover on Mars have been published in the journal Science Express. Talks on the results were also given during the 2013 Fall Meeting of the American Geophysical Union (AGU), held in San Francisco from December 9-13.
The papers provide valuable information for astrobiologists who are attempting to ...December 18, 2013 / Posted by: Aaron Gronstal
NASA’s Hubble Space Telescope has observed water vapor above the frigid south polar region of Jupiter’s moon Europa, providing the first strong evidence of water plumes erupting off the moon’s surface.
Previous scientific findings from other sources already point to the existence of an ocean located under Europa’s icy crust. Researchers are not yet certain whether the detected water vapor is generated by water plumes erupting on the surface, but they are confident this is the most likely explanation. Should further observations support the finding, it would make Europa the second moon in the solar system ...December 17, 2013 / Posted by: Daniella Scalice
Voyager 1 took photos of Jupiter and two of its moons (Io, left, and Europa) on Feb. 13, 1979. Credit: NASA/JPL
A new study supported by the NASA Astrobiology Institute suggests that the possibility of life being transferred from the inner solar system to the moons of Jupiter and Saturn, although very rare, cannot be ruled out.
The idea that life can spread through space is known as panspermia. One class of panspermia is lithopanspermia — the notion that life might travel on rocks knocked off a world’s surface. If these meteoroids encase hardy enough organisms, they could seed ...
Using the powerful eye of NASA’s Hubble Space Telescope, two teams of scientists, funded in part by the NASA Astrobiology Institute, have found faint signatures of water in the atmospheres of five distant planets.
The presence of atmospheric water was reported previously on a few exoplanets orbiting stars beyond our solar system, but this is the first study to conclusively measure and compare the profiles and intensities of these signatures on multiple worlds.
The five planets — WASP-17b, HD209458b, WASP-12b, WASP-19b and XO-1b — orbit nearby stars. The strengths of their water signatures varied. WASP-17b, a planet with an especially puffed-up ...December 13, 2013 / Posted by: Daniella Scalice
Please join us in congratulating our winner and wild cards from the FameLab regional heat at AGU 2013 in San Francisco on December 8th! From left to right: Alli Coffin from Washington State University (wild card), Lilah Rahn-Lee from UC Berkeley (wild card), and Gabriella March from the University of Wisconsin, Madison (winner and audience choice).
Thirteen early career scientists participated in the day – in the morning each contestant gave their first 3-minute, powerpoint-free talk to the judges, and in the afternoon all took part in a training focused on principles and best practices in science communication. Nine advanced to ...December 11, 2013 / Posted by: Daniella Scalice
Artist's impression of Kepler-62f, a potential super-Earth in its star's habitable zone. Credit: NASA/Ames/JPL-Caltech
Super-Earths are planets that range from 2-10 times the mass of the Earth, and with radii up to twice as large as our planet. A number of super-Earths have been identified around distant stars, but scientists have yet to determine if any of these planets could be habitable for life as we know it.
The first step in identifying a habitable super-Earth is to check and see if it has a stable, long-term orbit that sits within the habitable zone of its ...December 4, 2013 / Posted by: Aaron Gronstal
The magnesium silicate forsterite was one of the most abundant minerals in the Hadean Eon, and it played a major role in Earth's near-surface processes. The green color of this mineral (which is also known as the semi-precious gemstone peridot, the birthstone of August) is caused by small amounts iron. The iron can react with seawater to promote chemical reactions that may have played a role in life's origins. Credit: Photo courtesy of Robert Downs, University of Arizona, Ruff Project
The origin of life is thought to have been the result of natural processes that took advantage of ...November 29, 2013 / Posted by: Aaron Gronstal
The image to the left shows Jennifer Glass working in a chamber where she can control the oxygen levels to mimic the deep sea environment. On the right is an example of marine gas hydrates on the sea floor. Credit: Rob Felt (left image); US Department of Energy (right image)
Astrobiologists supported in part by the NASA Astrobiology Institute have performed a detailed analysis of the biochemistry that helps microorganisms thrive in extremely cold environments around methane seeps on the ocean floor.
The study was led by Jennifer Glass at Georgia Tech, and reveals previously unknown details about how two ...November 25, 2013 / Written by: Aaron Gronstal
An example of wrinkle mats at the Dresser Formation. Credit: Wikicommons
Scientists studying geological structures in Australia have found evidence of microbial life in 3.48 billion-year-old rocks. Their discovery could represent the oldest biosignatures yet identified on Earth.
Nora Noffke of Old Dominion University first spotted what looked like a microbially-induced sedimentary structure (or MISS) while visiting Australia in 2008. The MISS structures were found in Western Australia’s Dresser Formation, which contains some of the oldest known rocks on Earth’s surface. The Dresser Formation is an active research site for scientists studying the ancient environment of Earth ...
The United Launch Alliance Atlas V rocket with NASA’s Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft launches from the Cape Canaveral Air Force Station Space Launch Complex 41, Monday, Nov. 18, 2013, Cape Canaveral, Florida. NASA’s Mars-bound spacecraft, the Mars Atmosphere and Volatile EvolutioN, or MAVEN, is the first spacecraft devoted to exploring and understanding the Martian upper atmosphere.
Join us in congratulating the MAVEN team on a successful launch!
NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) mission began with a smooth countdown and flawless launch from Cape Canaveral Air Force Station’s Space Launch Complex 41 ...November 19, 2013 / Posted by: Daniella Scalice
The dark round blobs in this photomicrograph are the capsids of Bacteriophage T4 virus particles, which retain their characteristic shape after being coated with silica. The long, straight "tails" of many of the virus particles can be seen extending from the capsids in this image as well. Credit: Jim Laidler
What’s a virus to do when it finds itself in an inhospitable environment such as hot water? Coating itself in glass seems to not only provide protection, but may also make it easier to jump to a more favorable location to spread.
Researchers led by a group from the ...
This microscopic image shows dozens of individual bacterial cells of the recently discovered species Tersicoccus phoenicis. This species has been found in only two places: clean rooms in Florida and South America where spacecraft are assembled for launch. Image Credit: NASA/JPL-Caltech
Scientists have identified a new microbe in two geographically distant spacecraft assembly clean rooms. The bacteria is dubbed Tersicoccus phoenicis, since it was first found in the assembly clean room of the Mars Phoenix Lander.November 12, 2013 / Posted by: Aaron Gronstal
The transition to multicellularity was one of a few major events in life’s history that created new opportunities for more complex biological systems to evolve. As this transition fundamentally changes what constitutes an individual, dissecting the steps in this transition remains a major challenge within evolutionary biology.
Compared with other major transitions in evolution that occurred just once (for example, the origin of eukaryotes), multicellularity has evolved repeatedly. Most origins of multicellularity are ancient and transitional forms have been lost to extinction, so little is known about the potential for multicellularity to evolve from unicellular lineages, or the route ...
New data from Kepler show an increase in the number of Earth-sized planets discovered.
Scientists from around the world are gathered this week at NASA’s Ames Research Center for the second Kepler Science Conference to discuss the latest findings resulting from the analysis of Kepler Space Telescope data.
Included in these findings is the discovery of 833 new candidate planets. Ten of these candidates are less than twice the size of Earth and orbit in their star’s habitable zone, which is defined as the range of distance from a star where the surface temperature of an orbiting planet ...November 5, 2013 / Posted by: Daniella Scalice
- Mar 10 - Director's Seminar: The Formation of Complex Organic Molecules in Star-Forming Regions
- Mar 17-21 - Lunar and Planetary Science Conference
- Mar 17-21 - Search for Life Beyond the Solar System: Exoplanets, Biosignatures & Instruments
- April 1 - Application Deadline for NASA Astrobiology Early Career Collaboration Award