Artist impression of Kepler-90i, the eighth planet discovered orbiting around Kepler-90.
Google's artificial intelligence has been taught to look for planets around other stars. It's already making new discoveries that scientists have missed.
An artist’s impression of the exoplanet in close orbit to a star.
ESA, NASA, G. Tinetti (University College London, UK & ESA) and M. Kornmesser (ESA/Hubble)
A solitary planet in an eccentric orbit around an ancient star may help astronomers understand exactly how such planetary systems are formed.
An artist’s concept of what it could look like on the surface of one of the exoplanets of TRAPPIST-1.
Several of the newly-discovered exoplanets orbiting a small star appear to be locked in an intricate dance that hints at how such planetary systems can form.
Artist’s impression of what the view might be like from the surface of the exoplanet TRAPPIST-1f.
If there's life on one of the Earth's seven sisters, chances are it has spread to all of them.
Have we really discovered other “Earth-like” planets orbiting around other stars? Understanding what we do and do not know about exoplanets is the key to answering this question.
ESO/L. Calcada/N. Risinger/Reuters
Over the last 20 years, advances in the field of exoplanet discovery have excited the imaginations of scientists and enthusiasts alike. But we're in position to know yet whether a planet is habitable.