A solar system dating back billions of years points to the likelihood that Earth-sized worlds are common.
Evidence suggests that two planets larger than the Earth may be present in the outer solar system.
The newly found Kepler 438b is being hailed by astronomers as the most Earth-like world ever found.
NASA's Kepler space telescope has made its first discovery since being crippled by a technical fault.
Astronomers have identified the first ever ice giant planet beyond our own solar system.
Astronomers have found signs of water vapor on a planet located around 120 light years from Earth.
The satellite has arrived in orbit around the Red Planet after a 10-month voyage across the solar system.
A particularly intense solar storm could cause communications and power grid disruptions this week.
Astronomers have found evidence of water clouds outside of our own solar system for the first time.
NASA's Stardust spacecraft is now believed to have picked up particles from outside the solar system
Extrasolar planets with a companion world tugging at them could remain habitable for much longer.
Developed at the University of Sheffield, the new technology could be applied to practically any surface.
A particularly violent solar storm could one day have disasterous consequences for the modern world.
Astronomers have identified an extrasolar planet that takes 708 days to complete one orbit of its star.
A new study has concluded that an exoplanet requires a liquid water ocean in order to sustain life.
NASA's legendary space probe is now believed to have finally exited the solar system after 36 years.
Located 16 light years away, Gliese 832c has been identified as one of the best places to look for life.
The successor to the Hubble Space Telescope will be able to observe extrasolar planets like never before.
The space agency may use a drone to help explore the terrain of Saturn's enigmatic moon.
The powerful new model can help detect life on extrasolar planets more effectively than ever before.