For the first time ever, scientists have detected helium in the atmosphere of a planet in orbit around a distant star.
The Transiting Exoplanet Survey Satellite (TESS) is due to lift off aboard a Falcon 9 rocket on Monday.
A renewed hunt for Earth-like worlds has yielded a haul of 95 previously undiscovered extrasolar planets.
It is looking increasingly likely that the Trappist-1 system's seven worlds could be home to alien life.
A lack of carbon monoxide on a methane-rich world could indicate the presence of extraterrestrial life.
The space agency has made an important new exoplanet discovery using a Google artificial intelligence.
The space agency will be making an announcement on Thursday about its latest groundbreaking discovery.
Astronomers have observed an extrasolar planet with some of the weirdest weather conditions ever seen.
A 'hot Jupiter' world situated 1,400 light years away reflects so little light that it appears pitch black.
For the first time, astronomers have picked up signs of titanium oxide on a distant extrasolar world.
Astronomers have identified nine planets from which intelligent aliens could potentially be watching us.
Astronomers have found an extrasolar world with what has been described as a 'glowing water atmosphere'.
ESA is set to launch a new satellite that will seek out potentially habitable extrasolar planets.
Scientists believe that these new worlds lie in the 'Goldilocks zone' of their respective solar systems.
Scientists have been trying to work out what the weather might be like on this recently discovered world.
Astronomers have been analyzing the atmosphere of a Neptune-sized planet located 430 light years away.
Scientists have announced the discovery of a freezing Earth-mass world 13,000 light years away.
NASA has announced the discovery of seven new planets including three within their star's habitable zone.
The space agency is due to announce its latest findings at a press conference on Wednesday morning.
Astronomers believe that a planet 14 light years away may be a promising place to look for alien life.