Search for Life Archive
17 October 2013, 11:10 AM ET
Planetary scientist Jim Bell recently shared nearly 10 years' worth of photos from NASA's Spirit, Opportunity and Curiosity rovers, which have shed a great deal of light on the Red Planet's wetter and warmer past.
17 October 2013, 07:01 AM ET
A NASA telescope is probing the atmospheres and temperatures of alien planets. Designed when the number of confirmed exoplanets could be counted on two hands, NASA's Spitzer Space Telescope has become a strong observer of these distant bodies.
13 October 2013, 10:30 AM ET
What was your favorite space news story of the last week?
12 October 2013, 02:33 PM ET
From a stunning view of the Milky way to glowing auroras, don't miss these stunning night sky photos by stargazers and readers.
12 October 2013, 12:24 PM ET
From glowing northern lights to the largest solar sail , don't miss these amazing space photos of the week for Oct. 12, 2013.
10 October 2013, 02:01 PM ET
The researchers found signs of a rocky surface and lots of water around a white dwarf star called GD 61, marking the first time that these two kwy ingredients of a potentially habitable planet have been found together beyond Earth's solar system.
10 October 2013, 01:20 PM ET
The origin of life on Earth is still a hotly-debated topic. There are many different theories on how life was kick-started, as well as various experiments underway attempting to understand the processes involved.
09 October 2013, 11:52 AM ET
An alien signal could take many forms. From radio to light, and even genetic manipulation only visible in DNA, extraterrestrial communication could be extremely diverse.
08 October 2013, 02:09 PM ET
A handful of possible worlds discovered by an alien planet hunting spacecraft are skimming the surfaces of their host stars, new research shows.
07 October 2013, 11:52 AM ET
Finding life on alien planets might be harder than scientists originally expected. The search for habitable and inhabited exoplanets is focused on M dwarf stars.
06 October 2013, 09:00 AM ET
What was your favorite space news story of the last week?
05 October 2013, 08:00 AM ET
Don't miss the many great space images from the week of Oct. 5, including a private spacecraft's first International Space Station arrival, the spectacular launch of a brand-new private rocket and Comet ISON as seen from Mars orbit.
04 October 2013, 12:57 PM ET
Researchers have developed an observational strategy that would distinguish between two very different types of atmospheres — one associated with super-Earth exoplanets, which may be capable of supporting life, and the other with lifeless mini-Neptunes.
02 October 2013, 01:01 PM ET
See photos and images of ancient volcanoes on Mars from spacecraft at the Red Planet.
02 October 2013, 09:01 AM ET
An alien planet orbits a star other than our sun, and is sometimes called an "exoplanet." Learn more about the types of alien planets, including exoplanets and extrasolar planets, and get the latest news.
01 October 2013, 01:48 PM ET
Ionic or plasma water may exist deep within Gliese 1214 b, a super-Earth with a water-rich atmosphere. Astronomers have determined that the atmosphere of super-Earth Gliese 1214 b is likely water-rich. However, this exoplanet is no Earth twin.
01 October 2013, 12:00 AM ET
See amazing images of the night sky and cosmos in's gallery of cosmic images posted in September 2013.
29 September 2013, 09:25 AM ET
What was your favorite space news story of the last week?
28 September 2013, 12:22 PM ET
From a stunning view of the Milky way to the harvest moon, don't miss these stunning night sky photos by stargazers and readers.
28 September 2013, 11:06 AM ET
From a supersonic shockwave to the glowing harvest moon, don't miss these amazing space photos of the week for Sept. 28, 2013.
27 September 2013, 12:47 PM ET
A toxic chemical in Martian dirt may obscure scientists' search for extraterrestrial life. Perchlorates on the Red Planet may cause reactions in Curiosity's soil samples that destroy organic compounds, researchers say.
26 September 2013, 09:00 PM ET
Four of the five main databases that catalog exoplanet discoveries now list more than 900 confirmed alien worlds, and two of them peg the tally at 986 as of today (Sept. 26). So the 1,000th exoplanet may be spotted in a matter of days or weeks.
26 September 2013, 02:01 PM ET
Future Mars explorers should be able to get all the water they need out of the red dirt beneath their boots, a new study suggests. NASA's Mars rover Curiosity has found that surface soil on the Red Planet contains about 2 percent water by weight.
26 September 2013, 07:30 AM ET
A group of renowned scientists, engineers, artists and others need your help to send a message into the universe aboard a spacecraft bound for Pluto.
25 September 2013, 01:54 PM ET
The 24 awardees represent a diverse group of scientists, artists, writers, academics and activists. Seager was selected for her groundbreaking exoplanet research, which has led to ever-better models of the atmospheres and interiors of alien worlds.
24 September 2013, 06:02 PM ET
The 1-ton Curiosity rover paused to examine a few rocks late last week, making the first of five planned science stops en route to the 3.4-mile-high Mount Sharp. The break was fruitful, returning further signs of long-ago flowing water.
23 September 2013, 06:00 AM ET
Scientists have long debated the possibility of that the microbial seeds of life did not originate on Earth, but were perhaps delivered here from an alien source. A study finds new evidence to support the possibility of panspermia.
21 September 2013, 09:25 PM ET
What was your favorite space news story of the last week?
21 September 2013, 10:21 AM ET
From Venus and the moon crashing a wedding photo to the milky way over an ancient temple, don't miss these stunning night sky and space from the last week.
20 September 2013, 05:55 AM ET
From microbes on meteorites to canals on Mars, here are five claims of "proof" for aliens.
20 September 2013, 05:30 AM ET
A team of British researchers says a cell fragment found high up in Earth's atmosphere likely came from outer space. But such an extraordinary claim requires much more convincing evidence, outside scientists say.
18 September 2013, 04:51 PM ET
Water, water everywhere, and some of it fit to drink. That’s the picture of ancient Mars that has emerged during the past few months thanks to discoveries by NASA's Curiosity rover, which has been exploring the Red Planet since August 2012.