11
SETI is ramping up its search for intelligent alien life by sniffing out indicators of extraterrestrial technology.
14
It is often suggested that alien life could have reached Earth on a comet, but what about the other way around ?
2
The world's largest filled-aperture radio telescope is about to start operating after several years of testing.
7
Scientists have warned that an 'aliens landing on the White House lawn' type moment is unlikely to occur.
17
One scientist has proposed a possible new explanation for why we have yet to encounter intelligent alien life.
73
Whistleblower Edward Snowden has revealed what he found when he searched the CIA for evidence of alien life.
18
Gilbert Levin, who worked on the two Viking landers, maintains that evidence of alien life was found in 1976.
5
NASA's chief scientist Dr Jim Green is optimistic that the next rovers to visit Mars will find evidence of alien life.
31
Some of the things that make the Moon inhospitable could also be helping to preserve evidence of ET.
5
It may be possible to detect signs of extraterrestrial life on a distant world by picking up its biofluorescence.
14
Amusing archive footage has highlighted how attitudes on the topic of alien life have changed over the years.
113
In the United States, there are almost as many believers in intelligent alien life as there are believers in God.
10
Scientists have determined that planets orbiting red dwarf stars may be capable of supporting primitive life.
176
An international group of scientists met in Paris last week to discuss why we have yet to encounter alien life.
35
Scientists have synthesized a molecular system that hints at a possible alternative to DNA-based life.
16
In a new study, scientists have highlighted the possibility of finding life around the nearest single star to the Sun.
74
A scientist with NASA's Intelligent Systems Division believes that our idea of alien life is too narrow.
0
Scientists behind the ExoMars mission have picked out a landing site where they hope to find evidence of alien life.
5
According to a new paper, a thriving extraterrestrial world could be predominantly purple rather than green.
4
A new report has suggested that searching for evidence of alien life should be part of all future space missions.