Search For Life

Nearby Alien Planets Not So Life-Friendly After All
Planet Candidate Tau Ceti f
April 24th, 2015
The star Tau Ceti, which lies just 11.9 light-years from Earth, is thought to host five exoplanets, two of which have been posited to be potentially habitable. But a new study throws some cold water on these worlds' life-supporting ability.
Read More »
On Mars, Liquid Water Appears at Night, Study Suggests
Curiosity Rover on Mars
April 13th, 2015
Liquid water likely lurks just below the surface of Mars on cold winter nights, according to new research. Is it enough to support microscopic life-forms?
Read More »
Search for Alien Life Should 'Follow the Methane,' Scientists Say
Theoretical Methane-Based Cell
April 7th, 2015
When it comes to the search for life beyond Earth, the mantra is always 'follow the water.' But could an environment without H2O give rise to life in a different form? Scientists now say it's theoretically possible.
Read More »
Mars Life Search: Iron-Rich Rocks Could Be Key
Curiosity Drills Holes on Mars
April 24th, 2015
A study of Yellowstone's hot springs has revealed new clues about how organic materials might get preserved in similar environments on the Red Planet, bettering our chances of finding possible signs of life.
Read More »
Signs of Alien Life Will Be Found by 2025, NASA's Chief Scientist Predicts
Recent observations by planetary probes and telescopes on the ground and in space have shown that water is common throughout our solar system and the broader Milky Way galaxy.
April 7th, 2015
Solid signs of alien life will be spotted within 10 years, and definitive evidence will roll in within 20 to 30 years, NASA chief scientist Ellen Stofan said Tuesday (April 7).
Read More »
How Alien Planets Can Change Each Other's Habitability Over Eons
Crowded Solar System
April 7th, 2015
A new study sheds light on how exoplanets in tightly-packed solar systems interact with each other gravitationally by affecting one another's climates and their abilities to support alien life.
Read More »
Icy-Moon Discoveries: What They Mean for Alien Life Search
Enceladus Cross-Section
March 31st, 2015
Earlier this month, researchers made two big announcements: Saturn's moon Enceladus likely harbors hot springs, and Jupiter's huge satellite Ganymede apparently possesses a subsurface ocean that may contain more water than all of Earth does.
Read More »
Beyond Hubble: Will Future Space Telescope Seek Alien Life by 2030?
Hubble Space Telescope in Orbit
April 15th, 2015
It's now time to start planning out a future space telescope that will tackle the next big frontier in astronomy and astrophysics, researcher Mario Livio says — the search for signs of life beyond our neck of the cosmic woods.
Read More »
Guiding Our Search for Life on Other Earths
Artist's Concept of Kepler-69c
April 7th, 2015
A telescope will soon allow astronomers to probe the atmosphere of Earthlike exoplanets for signs of life. To prepare, astronomer Lisa Kaltenegger and her team are modeling the atmospheric fingerprints for hundreds of potential alien worlds.
Read More »
Earth's 'Alien' Creatures May Reveal Clues About Extraterrestrial Life
Tardigrades, also known as water bears or moss piglets, can survive being boiled, frozen and sent into space. Studying extreme examples of life on Earth can help scientists looking for life beyond our planet.
April 6th, 2015
A new exhibit at the American Museum of Natural History in New York highlights extreme examples of life on Earth, and what they may tell us about life elsewhere in the universe.
Read More »