Scientists find an exoplanet whose strange behavior may lead to the Solar's System hidden ninth planet.
A new study from NASA and the SETI Institute comes up with an exciting number of potentially life-supporting planets.
Astronomers propose new estimate of Earth-like planets in the Milky Way galaxy.
The Planetary Habitability Laboratory has made up some periodic tables of all of the confirmed and suspected exoplanets so far, plus planetary bodies in our own solar system.
Are we alone in the universe? NASA's exploration of TRAPPIST-1 has the potential to answer one of humanity's deepest questions.
TRAPPIST-1 is 40 light years from Earth. It would take us millions of years to get there.
Churchill displays a surprising amount of knowledge on a question that we are still wrestling with.
The nearest exoplanet ever has been observed, but not yet seen. Is this what the 'Earth Next Door' looks like?