National Aeronautics and Space Administration Logo
Follow this link to skip to the main content
YSS Logo
YSS Logo
YSS Logo
NASA Banner
Return to Solar System Exploration
  Overview News Classrooms Organizations & Clubs
   Educational Resources   Background   Featured Missions   Solar System Explorers 

Astrobiology -- Are We Alone in the Universe?: Got Life?
Solar System Explorers

Jill Tarter
Dr. Tarter, director of the Center for SETI Research, has devoted her career to hunting for signs of sentient life elsewhere. She says that being a scientist is a privilege -- it is almost like getting to remain a kid because she never needs to stop asking "why?"

Lynn Rothschild
Dr. Rothschild, an astrobiologist, studies how life, particularly microbes, evolved. She asks, "After all, how can we understand the evolution of life in the Universe, or discover whether we are alone in the cosmos, without a deep understanding of the one place we have data -- planet Earth?"

Richard Quinn
Chemist Dr. Quinn's research primarily focuses on evidence for ancient life that once existed on the planet. Based upon observational evidence in terms of the history of liquid water on Mars, it appears there were habitable environments in the past. He thinks the probability of ancient life existing on Mars is very high.

Margaret Race
Dr. Race's work addresses planetary protection: ensuring that missions to the Red Planet and other solar system bodies do not inadvertently bring terrestrial microbes along or return any microbes to Earth. She believes that no amount of science is able to tell us what it would mean to us as humans to know we're not alone.

All Topics
Back to YSS Home
Featured YSS Resource: From the Earth to the Solar System Featured YSS Resource: Solar System Lithograph Set Featured YSS Resource: NASA App - All of NASA at your fingertips
Awards and Recognition   Solar System Exploration Roadmap   Contact Us   Site Map   Print This Page
NASA Official: Kristen Erickson
Advisory: Dr. James Green, Director of Planetary Science
Outreach Manager: Alice Wessen
Curator/Editor: Phil Davis
Science Writer: Autumn Burdick
Producer: Greg Baerg
Webmaster: David Martin
> NASA Science Mission Directorate
> Budgets, Strategic Plans and Accountability Reports
> Equal Employment Opportunity Data
   Posted Pursuant to the No Fear Act
> Information-Dissemination Policies and Inventories
> Freedom of Information Act
> Privacy Policy & Important Notices
> Inspector General Hotline
> Office of the Inspector General
> NASA Communications Policy
> NASA Advisory Council
> Open Government at NASA
Last Updated: 12 Sep 2014