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Retrospections Lecture
 
Jaymie Matthews: The Humble Space Telescope
 
 Jaymie Matthews: The Humble Space Telescope
By combining results from the Hubble Telescope in visible light and the Chandra Telescope in x-rays, astronomers have plotted the evolution of galaxies. From 13.7 billion years ago, a decided birth rate boom and bust cycle is observable. The model is called 'bottom-up': smaller galaxies and cluster collide and merge to make bigger ones.


Alan Boss: Finding Exoplanets
 
 Alan Boss: Finding Exoplanets
The first such "discovery," of a planet allegedly orbiting Barnard's star, turned out to be a false alarm. In a talk at a recent symposium on extrasolar planets, astronomer Alan Boss, of the Carnegie Institution of Washington, told the tale of this scientific snafu.


Jack Farmer: Deciphering Mars
 
 Jack Farmer: Deciphering Mars
Dr. Jack Farmer of Arizona State University is an astrobiologist whose attention is often focused on Mars. Farmer is a longtime member of a community of scientists working to understand both the geologic history of Mars and the planet's potential to support life. At the recent Earth System Processes II conference, Farmer gave a talk on the current state of understanding about Mars: what we know and what we'd like to know.


The Drake Equation Revisited
 
 The Drake Equation Revisited
A series of presentations from 'The Drake Equation Revisited' forum, sponsored by the NASA exobiology branch.


Michael Brown: The Solar System and the Distant Dwarfs
 
 Michael Brown: The Solar System and the Distant Dwarfs
In a lecture given at NASA's Jet Propulsion Laboratory, Michael Brown of the California Institute of Technology talked about Pluto, the controversy about how to define a planet, and why he thinks such a definition ultimately has no scientific importance.


Michael Meyer: Mars Exploration
 
 Michael Meyer: Mars Exploration
Michael Meyer, lead scientist for NASA's Mars Exploration Program, spoke at the recent Viking thirtieth anniversary celebration.


Chris McKay: Early Mars Was Frozen, But Habitable
 
 Chris McKay: Early Mars Was Frozen, But Habitable
Plenary talk by Chris McKay at a meeting of the American Astronomical Society's Division of Planetary Sciences.


Chris McKay: Titan
 
 Chris McKay: Titan
Chris McKay, a planetary research scientist at NASA Ames Research Center, gave a public lecture, sponsored by the Planetary Society, in which he talked about the scientific results of the Cassini-Huygens mission.


Vikki Meadows: Finding Life From Far Away
 
 Vikki Meadows: Finding Life From Far Away
In May 2007, Victoria Meadows, Principal Investigator for the Virtual Planetary Laboratory at the California Institute of Technology's Spitzer Science Center, presented a lecture at NASA's Jet Propulsion Laboratory.


Chris McKay: Tracking Down Aliens
 
 Chris McKay: Tracking Down Aliens
Chris McKay, a planetary scientist at the Ames Research Center, has long been investigating the coldest and driest places on Earth. These harsh environments - and the ability of life to adapt there - could point the way to finding life on Mars. McKay presented this lecture, entitled "Drilling in Permafrost on Mars to Search for a Second Genesis of Life," at a NASA Astrobiology Institute Director's Seminar on November 29, 2004.


Ron Greeley: The Lure of Europa
 
 Ron Greeley: The Lure of Europa
Jupiter's moon Europa is thought to be one of the most likely abodes for microscopic life in our solar system.


Jim Graf: Mars Reconnaissance Orbiter
 
 Jim Graf: Mars Reconnaissance Orbiter
Jim Graf, Project Manager for the Mars Reconnaissance Orbiter, gave a talk where he provided an overview of the mission.


Pamela Conrad: Hunting Alien Life
 
 Pamela Conrad: Hunting Alien Life
Pamela Conrad, an astrobiologist with NASA's Jet Propulsion Laboratory, has traveled to the ends of the Earth to study life. On June 16, 2005, Conrad gave a lecture entitled, "A Bipolar Year: What We Can Learn About Looking for Life on Other Planets by Working in Cold Deserts."


Mitch Sogin: A Microbial Universe
 
 Mitch Sogin: A Microbial Universe
At a recent meeting of the NASA Astrobiology Institute, molecular evolutionist Mitch Sogin explained why his research focuses not on plants and animals, but rather on microbial life.


Joy Crisp: MER and Mars
 
 Joy Crisp: MER and Mars
Joy Crisp, project scientist for NASA's Mars Exploration Rovers, discussed the rovers' long journey and their surprising discoveries at a public lecture on May 19, 2005.


Maggie Turnbull: Using Light to Find Life
 
 Maggie Turnbull: Using Light to Find Life
Maggie Turnbull, an astronomer with the Carnegie Institution, has spent many years thinking about what kind of stars could harbor Earth-like planets. Her database of potentially habitable star systems could be used as a target list for NASA's upcoming Terrestrial Planet Finder (TPF) mission.


Jonathan Lunine: Talking Titan
 
 Jonathan Lunine: Talking Titan
Jonathan Lunine, a professor of planetary science and physics at the University of Arizona's Lunar and Planetary Laboratory in Tucson, Arizona, is also an interdisciplinary scientist on the Cassini/Huygens mission.


Dale Andersen: Diving For Life Under Antarctic Ice
 
 Dale Andersen: Diving For Life Under Antarctic Ice
Dale Andersen is a biologist at McGill University, the SETI Institute and NASA Ames. His research focuses on Mars analogs, locations on Earth that resemble Mars in one or more ways.


Penny Boston: Subsurface Slime
 
 Penny Boston: Subsurface Slime
Some of the caves that Penny Boston explores are so poisonous that she has to wear a full biosuit to enter them. To her, caves are laboratories for studying unusual forms of life on Earth, and hold important clues to finding life on other planets.


Steve Squyers: Mission to Mars: Risky Business
 
 Steve Squyers: Mission to Mars: Risky Business
Principal Investigator Steve Squyres explains how mission team members have prepared NASA's Mars Exploration Rovers rovers for success.


Presidential Commission on the "Moon, Mars and Beyond" initiative
 
 Presidential Commission on the "Moon, Mars and Beyond" initiative
The Presidential NASA address outlined broad plans for three exploration goals: finish the space station, a new shuttle by 2014, and a return to the moon.


Michael Belton: Solar System Exploration Survey
 
 Michael Belton: Solar System Exploration Survey
Solar system exploration remains a compelling activity because it places within our grasp answers to basic questions of profound human interest: Are we alone? Where did we come from? What is our destiny?


Andrew Chaikin: Beyond the Moon to Mars
 
 Andrew Chaikin: Beyond the Moon to Mars
In this multipart lecture series, noted author Dr. Andrew Chaikin takes his unique historical perspective on the question of 'Can Humans Get to Mars?'


Paul Davies: A One-Way Ticket to Mars
 
 Paul Davies: A One-Way Ticket to Mars
Theoretical physicist and cosmologist Paul Davies argues that the most cost-effective way to send humans to Mars would be to send them with the understanding that they wouldn’t be coming back.


NASA Astrobiology NPP Alumni Series
 
 NASA Astrobiology NPP Alumni Series
In this series of talks, alumni of the NASA Astrobiology NASA - Postdoctoral Program (NPP) share their work with one another and with the astrobiology community at large.


Lecture Back
 
A Decade in the Dust
Topic: Mars
01/15/14
NASA's twin Mars Exploration Rovers landed on Mars in January of 2004 to begin their 90-day primary mission on the red planet. Ten years later, the Opportunity rover is still returning data from the surface.

Humans 2 Mars Summit
Topic: Mars
05/07/13
Explore Mars and the George Washington University Space Policy Institute present the The Humans to Mars (H2M) Summit, 6-8 May 2013 at the Lisner Auditorium of the George Washington University in Washington, DC.
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