The new worlds are so much like our own that both are now on a list of the 19 planets most likely to support life.
Astronomers have found a planet with an atmosphere in a region that was thought to be hostile to such worlds.
Scientists have determined that planets orbiting red dwarf stars may be capable of supporting primitive life.
Astronomers have revealed the discovery of a 'super-Earth' around a star that is a mere six light years away.
The ground-breaking space telescope that discovered more than 2,600 exoplanets has finally run out of fuel.
Four gargantuan planets have been observed orbiting a relatively young star approximately 500 light years away.
A mere two months after beginning operations, NASA's TESS spacecraft has found two new extrasolar worlds.
Scientists have determined that a significant percentage of planets in our galaxy may be covered in water.
NASA's Transiting Exoplanet Survey Satellite (TESS) is now on the hunt for habitable extrasolar worlds.
NASA's new spacecraft has returned a breathtaking two-second exposure which features over 200,000 stars.
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.