In August 2016 the entire world was gripped with the news that a possible signal from an intelligent alien race had been received. Picked up by a Russian radio telescope, its discoverers had no explanation for the signal, which appeared to be artificial, and suggested it could be our first sign of alien life. Alas, it was not to be. The signal, like so many before it, turned out to be interference from Earth, most likely a satellite in orbit. But the event highlighted a key point – there is a huge public clamour for finding extraterrestrial (ET) life, and when it happens it is likely to be the biggest story in human history.
Most of our searches for intelligent alien life have been primitive and poorly funded. At the moment, perhaps the most well-known organisation leading the charge is the SETI (Search for Extraterrestrial Intelligence) Institute in California, which performs searches with a suite of antennae known as the Allen Telescope Array. But there are other groups and organisations around the world involved in the hunt too. For the most part it’s a small community. Information is shared, discussions are held and the ramifications of a discovery are considered.
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MYSTERIES OF THE UNI WHERE ARE ALL THE SPIRAL GALAXIES?
There are far fewer spiral galaxies than elliptical ones in the Supergalactic Plane, and scientists are keen to discover why
ZOMBIE STARS
+10 OTHER TERRIFYING SPACE OBJECTS
HOW TO BEAT LIGHT POLLUTION
Thought it was impossible to observe the wonders of the night sky from towns and cities? Think again. Follow our tips and tricks on successfully observing through sky glow
15 STUNNING STAR CLUSTERS
These beautiful stellar groupings are spattered across the cosmos
Eileen Collins "It was a difficult mission...we were the first to see Mir"
Having served as both the first female pilot and first female commander of NASA's Space Shuttle, Collins boosted the involvement of women in space exploration to a whole new level
MARS LEAKS FASTER WHEN IT'S CLOSER TO THE SUN
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FUTURE TECH KANKOH-MARU
This ambitious reusable spacecraft will be capable of taking 50 people to and from orbit
THE FINAL FRONTIER
Beyond the reach of the Sun is a fascinating region of the cosmos that were only just beginning to explore
A long-lost moon could explain Mars' weird shape and extreme terrain
A long-lost moon could explain why Mars is so different from the other rocky planets in the Solar System. Today Mars has two tiny moons.
A sprinkling of cosmic dust may have helped kick-start life on Earth
Cosmic dust may have helped kick-start life on Earth. New findings challenge a widely held assumption that this wasn't a plausible explanation.