New results from the 229th American Astronomical Society meeting reveal that Earth-sized planets can be made of minerals that are distinctly not Earth-like.
The seven Earth-size planets of TRAPPIST-1 are all mostly made of rock, with some having the potential to hold more water than Earth, according to a new study published in the journal Astronomy and Astrophysics.
NASA’s Transiting Exoplanet Survey Satellite (TESS), which will scan the skies to look for planets beyond our solar system—known as exoplanets—is now in Florida to begin preparations for launch in April.
How did we get here? How do stars and planets come into being? What happens during a star’s life, and what fate will its planets meet when it dies? Come along on this interstellar journey through time.
The ASTERIA satellite, currently in low-Earth orbit, is only slightly larger than a box of cereal, but it could help astrophysicists study planets orbiting other stars.
NASA’s Transiting Exoplanet Survey Satellite sent back a stunning sequence of serendipitous images showing the motion of a comet.
Scientists used NASA's Hubble and Spitzer space telescopes to find water "fingerprints" in the atmosphere of a hot, bloated, Saturn-mass exoplanet some 700 light-years away.
A star among planet hunters, Natalie Batalha wields a formidable weapon: NASA’s Kepler space telescope.
A giant 'Tatooine' discovered by NASA's Kepler mission is the largest world yet discovered that circles two stars.
NASA's efforts in digital communications have been recognized with nominations for six Webby Awards, the highest honor for online communications.
Our nearest neighboring star Proxima Centauri bears a startling resemblance to our own sun, raising questions about conditions on its Earth-sized planet.
"I think when you find a question you’re interested in pursuing, be brave and pursue it." The co-lead of NASA’s Kepler space telescope, Jessie Dotson, has pursued asteroids and exoplanets, and a lot more besides.
Hubble reveals that at least three of the TRAPPIST-1 planets do not seem to contain puffy, hydrogen-rich atmospheres similar to gaseous planets such as Neptune.
Astronomers have discovered two planets using NASA's Kepler telescope: a super Earth inferno and its Neptune-like companion.
The knowledge and tools NASA has developed to study life on Earth will be a great asset to the study of planets beyond our solar system.
NASA researchers say they have passed a major milestone in their quest to detect the atmospheres of giant planets outside our solar system.
The first science targets for the powerful Webb telescope have been announced, and they include the TRAPPIST-1 system.
The flying SOFIA telescope has found a planetary system that has similar architecture to our own, in the system Epsilon Eridani.
A team of scientists led by the Carnegie Institution for Science has released the largest collection of observations for hunting exoplanets to the public.
University of Warwick researchers have identified a white dwarf pulsar – a star type which has eluded astronomers for half a century.
The vortex coronagraph has the potential to image planetary systems closer to their host stars than any other instrument in the world.
Go beyond what's possible; that's the Spitzer Space Telescope's motto. Designed for a two-year mission, 13 years later it's still searching the skies for new discoveries.
The relatively nearby planet GJ 1132b may have an atmosphere despite being baked to a temperature of around 450 degrees Fahrenheit.
Astronomers have pinpointed which planets discovered by the NASA Kepler mission may sustain liquid water on their surfaces.
To find Earth-like planets, NASA will face a challenge that seems impossible: build a space telescope so stable, it moves less than the width of an atom.
A young star's stellar outburst brings its water snow line into view. The bizarre idea of snow orbiting in space is fundamental to planet formation.
Astronomers from UC Santa Cruz have found the first strong evidence of water vapor or ice in the the coldest known object outside our solar system– a brown dwarf five times the size of Jupiter.
How do some gas giant planets end up so feverishly close to their stars? NASA's Spitzer Space Telescope finds new clues.
The organic molecule methyl alcohol (methanol) has been found for the first time in a young planet-forming disc.
A team of astronomers has found that there are far more planets of the hot Jupiter type than expected in a dense cluster of stars called Messier 67.
Venus has an “electric wind” that may have played a significant role in stripping Earth’s twin planet of its oceans.