Scientists look at how nitrous oxide could have played a role in keeping early Earth ice-free.
Satellite view of the Red Lakes region in Ontario, Canada with four of the sampling areas from the UW-Madison study of Sr isotope compositions of Archaen carbonates. Image source: Google Maps
As the complexity and diversity of life on Earth keeps getting pushed further back in time with more and more data from the geologic record, the issue of the role of continents in the evolution of the early biosphere has become increasingly prominent. Are emergent continents required for life’s origin? Are nutrients such as P dependent on exposure of evolved continental crust? Are the ecological niches provided by extensive continental shelves required for a diverse ecosystem?
Scientists with the NASA Astrobiology Institute team based at the University of Wisconsin conducted a detailed study of Sr isotope compositions of Archean ...
Source: [University of Wisconsin]June 29, 2017 • Written by: University of Wisconsin • Report issue
ROSES-17 Amendment 13 releases final text for D.11 TESS Guest Investigator – Cycle 1, which replaces in its entirety the placeholder text released with the ROSES-17 NRA in February.
The TESS Guest Investigator (GI) Program solicits proposals for the acquisition and analysis of scientific data from the Transiting Exoplanet Survey Satellite (TESS) mission, a NASA Explorer mission currently scheduled for launch no later than June 2018. In a 2-year, near all-sky survey, TESS will monitor the brightness of nearby, bright F, G, K, and M stars in order to photometrically search for transiting planets smaller than Neptune ...
Source: [NSPIRES]June 28, 2017 • Written by: NASA • Report issue
Guadalupe "Lupita" Tover is a member of the Virtual Planetary Laboratory, the NASA Astrobiology Institute team based at the University of Washington. She is among 100 students recognized by the University of Washington for their achievements. Source: UW
Guadalupe “Lupita” Tovar, a member of the Virtual Planetary Laboratory who will be starting a PhD program in astronomy and astrobiology at the University of Washington, was recently profiled by the U of W for her accomplishments.
She was introduced to the field and to VPL through Pre-MAP, the university’s pre-major in astronomy program, and she has since been active in researching parameters for new generation telescopes necessary for mapping exoplanets.
Tovar, the daughter of immigrant parents, is the first in her extended family to finish high school and go to a four-year college, and the story details ...
Source: [University of Washington]June 23, 2017 • Posted by: Miki Huynh • Report issue
The Emergence of Life display presented at the Field Museum in Chicago, IL on May 18-21, 2017. Image source: NAI
On May 18-21, 2017, the NASA Astrobiology Institute team at the University of Illinois presented interactive displays and lectures about the Emergence of Life and Astrobiology in Yellowstone at Chicago’s Field Museum.
Positioned between the Field’s iconic T. rex “Sue” and the warring bull elephants, displays explored the revolutionary NASA-supported work on molecular phylogeny pioneered by Carl Woese, the origin and evolution of life on Earth, and microbial biomarkers in hot springs. More than 30,000 museum visitors visited the displays, and 450 high school students (90% from underrepresented populations) from the Chicago Public School system were ...June 21, 2017 • Written by: Daniella Scalice • Report issue
The Kepler & K2 Science Conference takes place June 19-23, 2017. Researchers and scientists unable to attend in-person can attend remotely.
Over the past 8 years, high-precision photometry from the Kepler/K2 mission has enabled breakthrough discoveries in exoplanet science, asteroseismology, eclipsing binary stars, solar-system objects, and extragalactic science. To celebrate the legacy and latest science results of Kepler/K2, NASA invites the community to the 4th Kepler & K2 Science Conference, hosted at NASA’s Ames Research Center in Moffett Field, CA on June 19-23, 2017.
Researchers and scientists unable to attend the conference in-person can attend remotely by signing in to this Adobe Connect URL: https://ac.arc.nasa.gov/kepler/.
The link will be live starting on Monday ...
Source: [Kepler & K2 Science Conference IV]June 19, 2017 • Posted by: Miki Huynh • Report issue
Female of the Species is a podcast created by Phoebe Cohen, paleontologist and member of the NASA Astrobiology Institute team based at MIT, centered around casual one-on-one conversations between Cohen and fellow women in science that include a “healthy mix of issues facing women in STEM, good solid chit chat, and belly laughs.”
A batch of six episodes is available for download via iTunes. The discussions glide between personal interests and experiences to broader social topics, and each podcast highlights engaging details about the featured guest, who also in turn gives a shout out to other inspiring women, helping to ...
Source: [Female of the Species]June 08, 2017 • Written by: Miki Huynh • Report issue
When haze built up in the atmosphere of Archean Earth, the young planet might have looked like this artist’s interpretation — a pale orange dot.
We know little about Earth’s surface temperatures for the first 4 billion years or so of its history. This presents a limitation into research of life’s origins on Earth and also how it might arise on distant worlds as well.
Now researchers suggest that by resurrecting ancient enzymes they could estimate the temperatures in which these organisms likely evolved billions of years ago. The scientists recently published their findings in the journal, Proceedings of the National Academy of Sciences.
“We need a better understanding of not only how life first evolved on Earth, but how life and the ...
Source: [astrobio.net]June 05, 2017 • Written by: Charles Choi • Report issue
The Astrobiology Graduate Conference (AbGradCon) 2017 takes place June 5-9, and the webcast will be viewable at SAGANet.org.
AbGradCon (Astrobiology Graduate Conference) 2017 takes place June 5-9 and will be webcast in its entirety at SAGANet.org.
AbGradCon provides a unique setting for astrobiologically-inclined graduate students and early career researchers to come together to share their research, collaborate, and network. AbGradCon 2017 marks the 13th year of this conference—each time in a different place and organized by a different group of students, but always with the original charter as a guide.
Since it is organized and attended by only graduate students, post docs, and select undergraduates, AbGradCon is an ideal ...
Source: [AbGradCon 2017]June 02, 2017 • Posted by: Miki Huynh • Report issue
Lynch examining microbial mats in the Pilot Valley Basin, a paleolake basin in Utah. Photo credit: NASA Astrobiology Institute
In May, the University of Illinois at Urbana-Champaign profiled Kennda Lynch, postdoc and member of the NASA Astrobiology Institute team at Georgia Tech, tracing how she’s grown from an engineering major at Illinois to become a multidisciplinary researcher in the NASA astrobiology community.
Lynch describes how her emerging fascination with astrobiology combined with opportunity, setting her on a path where she currently researches Mars analog environments found in Utah, work that helps NASA narrow down potential landing sites for the Mars 2020 rover and informs future Mars human missions.
Source: [UIUC Engineering]June 02, 2017 • Posted by: Miki Huynh • Report issue
The Astrobiology Science Conference (AbSciCon) took place at the Mesa Convention Center in Mesa, Arizona on April 24–28, 2017.
Sessions were live streamed, and the recordings of AbSciCon 2017 are now available on the NASA Astrobiology YouTube channel.
The theme this year was “Diverse Life and its Detection on Different Worlds.” Mars and icy worlds in our solar system are increasingly recognized as habitable, even as increasing numbers of exoplanets in their stars’ habitable zones have been discovered. The focus is shifting from identification of habitable worlds, to detection of life on these worlds.
Conference website: http://www.hou ...May 18, 2017 • Posted by: Miki Huynh • Report issue
A researcher looks over the Greenland ice cap, a “frozen ocean.” Eleven scientists returned from a field campaign testing an instrument that can scrutinize holes in ice for signs of life. Someday, such an instrument might find its way to Europa or Mars. Credit: NASA/JPL-Caltech/Michael J. Malaska
Ocean worlds are on planetary scientists’ minds. More and more, evidence rolls in about the potential habitability of ice-covered bodies like Jupiter’s moon Europa or Saturn’s moon Enceladus. The findings point to heat-driven processes in their subsurface oceans that could support life. Scientists are now beginning to wonder: Could the search for life end on one of these icy satellites?
Assuming humanity does land a spacecraft on Europa or Enceladus, any evidence of life it might uncover would receive heavy scrutiny. In a recent report on a possible landing mission to Europa, scientists devoted multiple chapters to discussing ...
Source: [Eos]May 16, 2017 • Written by: JoAnna Wendel • Report issue
NASA scientist, Mary Beth Wilhelm, collects soil samples of preserved ancient microorganisms in the Atacama Desert.
In the above photo, NASA scientist Mary Beth Wilhelm, wearing a cleanroom suit, kneels as she collects soil samples containing microorganisms from Chile’s Atacama Desert, one of the driest places on the planet. She is investigating the preservation of ancient microorganisms on Earth, and what that might mean for future visits to Mars.
“My research shows that the molecules which made up microbes that lived long ago remain well preserved under extremely dry, Mars-like conditions in the Atacama Desert here on Earth,” said Wilhelm, a researcher at NASA’s Ames Research Center in California’s Silicon Valley, and a ...
Source: [NASA]May 13, 2017 • Posted by: Miki Huynh • Report issue
The NASA Astrobiology Institute was pleased to once again sponsor the Student Poster Competition at the Astrobiology Science Conference (AbSciCon) 2017. As with previous AbSciCon conferences, this event provided motivation, encouragement, and most of all, recognition to astrobiologists of the future.
Thank you to the 85 students and 43 judges that participated in the competition!
The first place poster, with an award of $1000, went to Jacqueline Long from the College of Marine Science, University of South Florida. Her poster was titled: Chlorophyll-f: Earth’s Unseen Production and Habitability Under Red Light.
You can read her abstract at: http://www ...May 04, 2017 • Written by: Julie Fletcher • Report issue
An artist's conception of planet Kepler-452b, the first near-Earth-sized world to be found in the habitable zone of a star that is similar to our sun.
(Inside Science) — It seems like every day that astronomers discover another possibly habitable world, like Proxima Centauri b, our closest exoplanent neighbor, and TRAPPIST-1f, one of seven recently discovered Earth-sized planets orbiting the same star. But don’t prepare for first contact just yet. It will be exceedingly complicated to figure out whether there’s actually any life or potential for it on such planets, based on new research into our own evolving world.
To a distant observer peering through a telescope, even Earth would not have shown signs of life through most of its past. Despite the fact that our ...
Source: [NBC News]May 02, 2017 • Written by: Ramin Skibba • Report issue
Marcus Bray (left), a biology Ph.D. candidate, and Jennifer Glass, assistant professor in the Georgia Institute of Technology’s School of Earth and Atmospheric Sciences and member of the NASA Astrobiology Institute Alternative Earths team, are shown in the laboratory where tiny incubators simulated early Earth conditions. (Credit: Rob Felt, Georgia Tech)
For much of its first two billion years, Earth was a very different place: oxygen was scarce, microbial life ruled, and the sun was significantly dimmer than it is today. Yet the rock record shows that vast seas covered much of the early Earth under the faint young sun.
Scientists have long debated what kept those seas from freezing. A popular theory is that potent gases such as methane – with many times more warming power than carbon dioxide – created a thicker greenhouse atmosphere than required to keep water liquid today.
In the absence of oxygen, iron built up in ancient ...
Source: [Georgia Tech]April 18, 2017 • Written by: Georgia Tech • Report issue
- October 30 - Application Deadline: Postdoctoral Researcher at Southwest Research Institute (OSIRIS-REx)
- October 31 - Application Deadline: Cornell University - Research Support Specialist II
- November 1 - Application Deadline: AbSciCon 2019: Session Proposal Call!
- November 1 - Application Deadline: Tenure-Track Faculty Position in Geochemistry - Earth/Planetary Processes
- November 1 - Application Deadline: Postdoctoral Position in Cometary Science/Astrochemistry
- November 1 - Application Deadline: Faculty Position in Geophysics and Geochemistry at the Massachusetts Institute of Technology (MIT)
- November 1 - Application Deadline: National Air and Space Museum Postdoctoral Earth and Planetary Sciences Fellowship
- November 1 - Application Deadline: Tenure-track Faculty Position in Geochemistry
- November 1 - Application Deadline: Ph.D. Position in Astrochemistry, Star and Planet Formation
- November 15 - Abstract Submission Deadline for Mars Extant Life: What's Next?
- November 15 - Abstract Submissio Deadline for Kepler and K2 Science Conference V
- November 15 - Application Deadline: Student travel grant available for Mars Extant Life: What's Next? conference
- December 7 - Application Deadline: ROSES-18: Delay of Due Date, Late Data Release, and New Opportunity for Cassini Data Analysis.
- December 15 - Application Deadline: Bateman Postdoctoral Fellowship, Yale University
- December 31 - Early Registration Deadline for Mars Extant Life: What's Next?
- December 31 - Application Deadline: Emergence of Metabolism and Mineral-Organic Chemistry on Early Earth and Ocean Worlds
- December 31 - Application Deadline: NASA SMD Seeks Volunteer Reviewers
- January 1 - Application Deadline: Grad Student/Postdoc Opportunities in Planetary Surface Processes at UT Austin