Search for Life Archive
02 July 2013, 07:17 PM ET
The Search for Extraterrestrial Intelligence can be said to have begun in 1896, but it has evolved over the years. SETI's Laurance Doyle tells what the 21st-century search for E.T. is like.
01 July 2013, 04:21 PM ET
A new estimate suggests the Milky Way alone may host 60 billion such planets around faint red dwarf stars.
01 July 2013, 07:00 AM ET
Astrobiologists use Earth as an analogue for other planets.
01 July 2013, 12:01 AM ET
Spectacular images every day.
30 June 2013, 12:31 PM ET
What was your favorite space news story of the last week?
28 June 2013, 07:45 PM ET
From space-age jewelry to what a lunar colony could look like, don't miss these amazing space photos of the week.
27 June 2013, 05:01 AM ET
Mars has been exposed to Earth life for billions of years, via meteorite strikes.
26 June 2013, 01:01 PM ET
The two 'mini-Neptune' alien planets 3,300 light-years from Earth could be the first of many more, scientists say.
25 June 2013, 02:39 PM ET
Can we get to Mars if we don't mine the moon?
25 June 2013, 01:24 PM ET
The nearby star Gliese 667c is orbited by up to seven alien planets, three of which are super-Earths that may be habitable.
25 June 2013, 11:18 AM ET
See images of the alien planets around the nearby star Gliese 667C, which has three potentially habitable exoplanets.
25 June 2013, 09:21 AM ET
There are at least six planets orbiting the nearby star Gliese 667C, scientists say.
24 June 2013, 06:27 AM ET
The Zoe robot's work in the Atacama could help plan out a life-hunting Mars mission.
23 June 2013, 10:00 AM ET
What was your favorite space news story of the last week?
22 June 2013, 07:20 AM ET
From a black hole's guts to a cosmic penguin , don't miss these amazing space photos of the week.
21 June 2013, 01:19 PM ET
But why did the UK government shut down the UFO Desk?
18 June 2013, 09:53 AM ET
Lone Signal ( is inviting the public to compose and transmit messages to selected stellar systems via the internet.
18 June 2013, 07:00 AM ET
The Lone Signal project wants to send your notes out into the universe.
17 June 2013, 02:28 PM ET
A methane-sniffing Mars orbiter is on track to launch in January 2016.
16 June 2013, 07:00 AM ET
What was your favorite space news story of the last week?
15 June 2013, 07:00 AM ET
From a sunset trail of a rocket to 26 black holes in our neighboring galaxy, don't miss these amazing space photos of the week.
14 June 2013, 03:32 PM ET
The haul brings Kepler's total tally of exoplanet candidates to 3,216.
14 June 2013, 03:23 PM ET
Part nine in a 10-part series on exoplanet science today.
14 June 2013, 11:13 AM ET
Could a small sub help find life under Europa's icy shell?
13 June 2013, 03:20 PM ET
Future explorers on Mars will have to deal with high concentrations of the toxic chemical perchlorate.
13 June 2013, 03:05 PM ET
The potential world sits about 7.5 billion miles from its host star.
13 June 2013, 07:00 AM ET
Too many false alarms could blunt the impact of a truly monumental discovery.
12 June 2013, 02:03 PM ET
Exoplanet experts answer questions about missions to discover and probe alien worlds.
11 June 2013, 06:13 PM ET
Planetary Resources' Arkyd space telescope may add planet-hunting to its skill set.
11 June 2013, 06:13 PM ET
Be one of the first to possibly beam a hello to aliens on a distant star.
10 June 2013, 05:32 PM ET
These dark atoms could form dark matter disks around galaxies.
10 June 2013, 03:11 PM ET
Astronomers are developing techniques to map oceans, continents and other large features of alien planets.