An Ancient Seabed Holds Secrets in the Search for Life on Other Planets
Dr. Victoria Meadows received SETI's Drake Award in June 2018. Image Source: University of Washington.
Victoria Meadows wants to know what life beyond Earth looks like. How can we tell whether a neighboring exoplanet located 4 or 20 or 100 lightyears away from Earth is able to sustain life? At the NASA Astrobiology Institute Virtual Planetary Laboratory, Victoria and her team are developing computer models to understand how stars and planets interact to enable a planet to support life, and how even primitive life might impact its planetary environment in ways we could detect and interpret over interstellar distances.
On June 14, 2018, the SETI Institute will recognize Victoria S. Meadows with the 2018 Drake Award in celebration of her contributions to the field of astrobiology and her work as a researcher, leader and inspiration for everyone working in her field.
Read the full press release from the SETI Institute.
Source: [SETI]May 04, 2018 • Written by: SETI • Report issue
Selections for the April 2018 Early Career Collaboration Award (ECCA) have been made! Congratulations to this year’s recipients of the spring awards for research dedicated to astrobiology.
Source: [ECCA]May 03, 2018 • Posted by: Miki Huynh • Report issue
Image source: ACA
The NASA Astrobiology Institute (NAI) has selected six early career astrobiologists to participate in a 10-day trip to astrobiology-relevant field sites in Western Australia. The 2018 Australian Astrobiology Tour is organized by the Australian Centre for Astrobiology (ACA) and led by Professor Martin Van Kranendonk, a leading expert in Precambrian geobiology. The field trip will include visits to remote sites of fossilized stromatolites from the c. 1.8 Ga Duck Creek Dolomite and c. 2.4 Ga Turee Creek Group, and a walk through the transition across the rise of atmospheric oxygen (the GOE).May 02, 2018 • Written by: Melissa Kirven-Brooks • Report issue
An artist’s impression of a "Snowball Earth". Image credit: NASA.
Tidally-locked planets in the habitable zone of stars may be able to avoid global ice ages, according to a study that models the interplay of where ice forms and how it reflects sunlight. Meanwhile, a second study has found that planets that are strongly tilted are more likely to experience sudden ice ages.
The “habitable zone” around stars, where it’s warm enough for liquid water to exist on an Earth-like world’s surface, has long been the gold standard in assessing the potential for life on other worlds, but as our understanding of astrobiology deepens, scientists are looking for other clues to habitability.
Read more at Astrobiology Magazine.
Source: [Astrobiology Magazine (astrobio.net)]April 26, 2018 • Written by: Charles Q. Choi • Report issue
Jim Bridenstine, right, is sworn in as the 13th NASA Administrator by Vice President Mike Pence as Bridenstine's family watches, Monday, April 23, 2018 at NASA Headquarters in Washington. Source: Photo Credit: NASA/Joel Kowsky
Jim Bridenstine was confirmed by the U.S. Senate on Thursday, April 19, 2018 to serve as the agency’s 13th administrator and sworn in by Vice President Mike Pence on April 23. Vice President Pence and newly sworn-in NASA Administrator Bridenstine spoke live with three NASA astronauts on the International Space Station.
Source: [NASA]April 23, 2018 • Written by: NASA • Report issue
Video Source: SciNews
The Transiting Exoplanet Survey Satellite (TESS), aboard the SpaceX Falcon 9, successfully launched into space from Cape Canaveral Air Force Station, Florida on April 18, 2018.
TESS will spend two years surveying the sky, initially around 200,000 stars, monitoring for drops in brightness from transiting planets, to track down candidates for follow-up investigation. TESS PI George Ricker, Senior Research Scientist at MIT Kavli Institute, estimates that somewhere between 500 to 1,000 Earth-sized and super-Earth-sized exoplanets could be detected out of an overall excess of 20,000 exoplanets.
The information TESS provides could then be further analyzed by current instruments and future missions like the James Webb Space Telescope (JWST), to shed more light on the characteristics of the discovered planets. Eventually, combined with additional surveys from upcoming exoplanet missions, we will have a greater understanding of what lies beyond our solar system and how much of it is potentially habitable.
The Astrobiology Magazine Guide to TESS provides a detailed overview of the mission and its trajectory.
Further information on TESS and its relationship to astrobiology, along with links to TESS resources, is available at the Astrobiology at NASA website.April 19, 2018 • Written by: Miki Huynh • Report issue
The ARIEL (Atmospheric Remote-sensing Exoplanet Large-survey) space mission has been selected by the European Space Agency (ESA) as the next medium-class science mission. Image source: ARIEL Space Mission / ESA.
In March of 2018, ARIEL (Atmospheric Remote-sensing Exoplanet Large-survey), developed by a consortium of more than 50 institutes from 12 European countries, was selected as the European Space Agency’s next medium-class mission, the first dedicated to exoplanet atmospheres. The four-year mission, planned for launch in 2028, will observe 1000 planets orbiting distant stars and make the first large-scale survey of the chemistry of the atmospheres.
“ARIEL will study a statistically large sample of exoplanets to give us a truly representative picture of what these planets are like. This will enable us to answer questions about how the chemistry of a planet links to the environment in which it forms, and how its birth and evolution are affected by its parent star,” said Giovanna Tinetti, PI for the ARIEL mission and Professor of Astrophysics at University College London. She is also a former NASA Astrobiology Postdoctoral Fellow at JPL and a past member of the NASA Astrobiology Institute.
More information on ARIEL, including facts, figures, and press release, are available at the ARIEL Space Mission website.
Source: [ESA]April 13, 2018 • Written by: Miki Huynh • Report issue
Dr. Jim Green will serve as NASA Chief Scientist beginning May 1, 2018. Credit: NASA
Acting NASA Administrator Robert Lightfoot has named the Science Mission Directorate’s Planetary Science Division Director Jim Green as the agency’s new chief scientist, effective May 1. He succeeds Gale Allen, who has served in an acting capacity since 2016 and will retire after more than 30 years of government service.
Source: [NASA]April 10, 2018 • Written by: NASA • Report issue
An icy lake in Svalbard, Norway, taken by an unmanned aerial vehicle. Life on Earth may have begun in an environment with both water and ice, and modern analogs may help the scientific community understand how. Image credit: Marjorie D. Cantine. (via Astrobiology Magazine)
Marjorie Cantine, graduate student with the Earth, Atmospheric and Planetary Sciences department at MIT, and Greg Fournier, professor of Geobiology at MIT and a member of the Foundations of Complex Life team of the NASA Astrobiology Institute, have co-authored a paper tracing possible evidence for the beginnings of life under very different environmental conditions than those currently assumed for the last universal common ancestor (LUCA). Cantine and Fournier suggest how that separate evolution might shift our thinking about LUCA and provide a different take on how we assume life emerged within extreme environments such as Mars.
A feature story is available at Astrobiology Magazine.
“Environmental Adaptation from the Origin of Life to the Last Universal Common Ancestor” is published in Origins of Life and Evolution of Biospheres.
Source: [Astrobiology Magazine]April 09, 2018 • Written by: Miki Huynh • Report issue
Illustration of the Transiting Exoplanet Survey Satellite (TESS) in front of a lava planet orbiting its host star. TESS will identify thousands of potential new planets for further study and observation. Source: NASA/GSFC
NASA’s Transiting Exoplanet Survey Satellite (TESS) is undergoing final preparations in Florida for its April 16 launch to find undiscovered worlds around nearby stars, providing targets where future studies will assess their capacity to harbor life.
“One of the biggest questions in exoplanet exploration is: If an astronomer finds a planet in a star’s habitable zone, will it be interesting from a biologist’s point of view?” said George Ricker, TESS principal investigator at the Massachusetts Institute of Technology (MIT) Kavli Institute for Astrophysics and Space Research in Cambridge, which is leading the mission. “We expect TESS will discover a number of planets whose atmospheric compositions, which hold potential clues to the presence of life, could be precisely measured by future observers.”
Source: [NASA]April 03, 2018 • Written by: NASA • Report issue
Image Source: ACA
Application Deadline: Wednesday, April 13, 2018 at 9PM PST
The NASA Astrobiology Institute is accepting applications from early career PhD astrobiologists (within 3 years of their degree) to participate in a 10-day trip to astrobiology-relevant field sites in Western Australia. Included will be remote sites of fossilized stromatolites from the c. 1.8 Ga Duck Creek Dolomite and c. 2.4 Ga Turee Creek Group, and a walk through the transition across the rise of atmospheric oxygen (the GOE). We will then camp at Karijini National Park and hike through a canyon with walls made of 2.5 Ga Banded Iron Formation (BIF), and swim at the beautiful Fortescue Falls. Following this, will be a visit to stromatolites of the c. 2.7 Ga Fortescue Group, then the c. 3.35-3.49 Ga fossiliferous units of hte Pilbara Craton, including newly discovered geyserite in the Dresser Formation, site of the oldest evidence for life on land.
The expedition, from July 2 to July 11, 2018, will be led by Professor Martin Van Kranendonk of the University of New South Wales, the director of the Australian Centre for Astrobiology (ACA). The trip is designed for scientists interested in the earliest life on Earth and early Earth environments.March 30, 2018 • Posted by: Miki Huynh • Report issue
Nathalie Cabrol. Credit: SETI
Nathalie Cabrol, Senior Research Scientist and Director of the Carl Sagan Center at SETI and PI for the SETI team of the NASA Astrobiology Institute, is featured in an in-depth New York Times Magazine story by Helen Macdonald, who traveled with Cabrol and her team in 2016 to the high-altitude regions of Chile as they conducted Mars-related research in the fascinating and harsh environments.
Macdonald connects the journey with details from Cabrol’s life, unearthing a poignant and human side to the scientist and science of searching for life in the Universe.
Read the full story, “In Her Orbit.”
Related Story: The Search for Mars Biosignatures Up at High Altitudes
Source: [New York Times Magazine]March 28, 2018 • Written by: Miki Huynh • Report issue
Research conducted by astrobiologists from the Planetary Habitability Laboratory (PHL) and the Arecibo Observatory will be highlighted in the upcoming National Geographic series, One Strange Rock. The series presents a “mind-bending, thrilling journey that explores the fragility and wonder of planet Earth” and premieres March 26, 2018.
A press release highlighting the early premiere of One Strange Rock at PHL is available at their website. PHL Director Prof. Abel Mendez was a 2007 Minority Institution Research Support (MIRS) Program—now the Astrobiology Faculty Diversity (AFD) Program—fellow.
Video clips of One Strange Rock, including one featuring past NAI team member Dr. Felipe Gomez Gomez of the Centro de Astrobiologia (CAB), are available through National Geographic.
Source: [National Geographic]March 23, 2018 • Written by: Miki Huynh • Report issue
Vent tubeworms, such as Riftia pachyptila found near the Galapagos Islands, represent the kinds of life that can persist near deep sea hydrothermal vents, the source of chemical energy that may provide one of the building blocks for life. Credit: NOAA Okeanos Explorer Program, Galapagos Rift Expedition 2011 (via Astrobiology Magazine)
Astrobiologist Michael Russell, Co-I of the NASA Astrobiology Institute Icy World’s Team at NASA’s Jet Propulsion Laboratory, and his colleagues suggest that where an icy crust and a hidden ocean meet in a frozen world such as Europa, two sources of the building blocks of life could join together and potentially support the evolution of life. At the underside of Europa’s icy crust, they suggest that a shallow biosphere–a network of ecosystems–can form.
The feature story by Charles Q. Choi is published in Astrobiology Magazine.
The research paper, “The Possible Emergence of Life and Differentiation of a Shallow Biosphere on Irradiated Icy Worlds: The Example of Europa” is published in Astrobiology.
Source: [Astrobiology Magazine (astrobio.net)]March 14, 2018 • Posted by: Miki Huynh • Report issue
This artist's concept shows what the TRAPPIST-1 planetary system may look like, based on available data about the planets' diameters, masses and distances from the host star, as of February 2018. Credits: NASA/JPL-Caltech
The seven Earth-size planets of TRAPPIST-1 are all mostly made of rock, with some having the potential to hold more water than Earth, according to a new study published in the journal Astronomy and Astrophysic. The planets’ densities, now known much more precisely than before, suggest that some planets could have up to 5 percent of their mass in water — which is 250 times more than the oceans on Earth.
Source: [NASA JPL]March 06, 2018 • Written by: NASA JPL • Report issue
- September 25 - Seminar: "Ask an Astrobiologist Featuring Dr. Amanda Stockton"
- September 30 - Application Deadline: HST Observations to Detect Plumes/Outgassing from Europa
- September 30 - Application Deadline: Research Scientist: Jet Propulsion Laboratory
- October 1 - Abstract Submission and Registration Opens for Mars Extant Life: What's Next?
- October 1 - Application Deadline: ESA Research Fellowships in Space Science
- October 1 - Application Deadline: Postdoctoral Research Scholar (JOB# 12520) - Arizona State University
- October 2 - Registration Deadline for Europa Deep Dive 2: Chemical Composition of Europa and State of Laboratory Data
- October 8 - Application Deadline: T.C. Chamberlin Postdoctoral Fellowship
- October 30 - Application Deadline: Postdoctoral Researcher at Southwest Research Institute (OSIRIS-REx)
- 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
- December 31 - Early Registration Deadline for Mars Extant Life: What's Next?
- January 18 - Late Registration Deadline for Mars Extant Life: What's Next?
- February 10 - Registration Deadline for Kepler and K2 Science Conference V
- March 6 - Indication of Interest Deadline for Ninth International Conference on Mars