Learn more about the strange new class of planets that wander alone in the galaxy.
Computer analysis of the wobble of a nearby star may have turned up evidence for a small, Earth-sized world -- but don't get too excited about it being habitable.
Only one star system discovered so far has a population of both super-Earths and hot-Jupiters -- what's up with that?
Long before the first confirmed planetary finds in the 1990s, an observer in 1917 caught evidence of planetary debris around a new star, new research into an astronomical glass plate reveals.
Just as NASA’s Kepler space telescope was to begin a unique survey of planets without parent stars, ground control teams discovered the observatory had put itself into emergency mode due to an unknown technical problem.
Communications with the Kepler space telescope have been resumed and hopes are high that the embattled mission will soon get back to the business of finding alien worlds.
After an unprecedented survey to look for Earth-like planets beyond the solar system, NASA’s Kepler space telescope this week begins a search for free-flying planets to learn just how common orphan worlds may be.
An exoplanet has been discovered in a very strange star system more bizarre than most science fiction storylines.
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