When the Hubble Space Telescope set its sights toward the binary star system HD 106906, astronomers found a world that could resemble the long-sought Planet X. For the first time, astronomers are able ...

A pattern in the movements of a brown dwarf that orbits a Sun-like star is likely to be caused by a moon. If confirmed, this would be the first exomoon, that is a moon orbiting a planet that in turn ...

In young planetary systems, mutual collisions between asteroids or comets generate large amounts of dust, forming a "debris ...

After decades of searching, astronomers may have finally stumbled upon the first moon known to exist beyond our solar ...

The NASA/ESA Hubble Space Telescope has made the first detection ever of an organic molecule in a planet orbiting another star. This breakthrough is an important step in eventually identifying signs ...

Astronomers may have identified the first known exomoon, orbiting a Jupiter-like exoplanet, amidst 6,000 confirmed exoplanets.

Astronomers have identified a colossal exomoon candidate roughly seven Neptune masses orbiting the giant world HD 206893 B — ...

While Jupiter may be our planetary guardian angel, protecting us from harm, gas giants in other solar systems might actually wreak havoc on other exoplanets nearby. In our solar system, Jupiter's huge ...

Almost all planets in our solar system have moons – why not exoplanets? Astronomers believe they have discovered the first ...

An exoplanet in our celestial ‘neighborhood,’ located about 64 light-years away, was already known for its extreme weather. Any visitor willing to brave the 1,700 degree Fahrenheit temperatures would ...