For the first time, astronomers have detected radio signals from a planet beyond our solar system, according to a study ...

According to a new study, our system was once home to a fifth gas giant that suddenly vanished some 4 billion years ago after a run-in with Neptune.

Radio signals detected at a planet beyond our Solar System ...

Researchers used South Africa's powerful MeerKAT radio telescope array to scan the Beta Pictoris system multiple times.

In a new study, astronomers detail observations of what could be the first known exosatellite - a natural object orbiting a ...

The shape of a planet's orbit is one of its fundamental properties, along with its size and distance from its host star. Earth has a nearly circular orbit, but some planets outside our solar system, ...

Planets without stars to orbit raise important questions about how planets evolve and what habitability might look like ...

What if Jupiter gained just a little bit more mass during its formation period, and then ignited to become a star? How ...

Add Yahoo as a preferred source to see more of our stories on Google. Digital art of distant planet - Dottedhippo/Getty Images On August 24, 2006, our solar system lost a planet. It wasn't by ...

The Sun is an incandescent but benevolent dictator. For billions of years, it’s kept our star system well organized through the influence of its powerful gravity. All the planets revolve around it on ...

Studying the orbits of thousands of exoplanets shows that large planets tend to have elliptical orbits, while smaller planets tend to have more circular orbits. This split coincides with several other ...