A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

By Will Dunham WASHINGTON, Feb 14 (Reuters) - Astronomers have observed a planetary system that challenges current planet ...

Their observations of a faint, cool M-dwarf star called LHS 1903 revealed a system with a rocky world at its outer edge. LHS ...

The fourth planet in the system is a rocky world, while the second and third ones are gas planets.

Astronomers have discovered a planetary system that appears to flip one of astronomy's most reliable rules on its head.

A rocky exoplanet in the LHS 1903 system defies planet formation models, hinting that gravitational upheaval reshaped the red dwarf’s four worlds.

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

A global team of astronomers, led by the University of Warwick, have used a European Space Agency (ESA) telescope to discover ...

In our Solar System, the inner planets (Mercury to Mars) are rocky, and the outer planets (Jupiter to Neptune) are gaseous.

Stargazers, get ready for a celestial show! A planetary alignment featuring six planets will be visible in late February and ...

Look west just after sunset from this weekend for a chance to see some of six planets, though the best views will be had later this month.