An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Artwork depicting how water, both regular and heavy, comes from giant molecular clouds and is ...

Six planets will line up in a rare "planetary parade" this month - but spotting them all won't be easy.

Gas giants are massive worlds made mostly of hydrogen and helium. They lack solid surfaces, and in our solar system, Jupiter ...

We know that our Solar System is not the blueprint for all planetary systems out there. There are gas giant planets orbiting ...

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

Scientists have identified a rocky outer planet in a system where a gas giant was expected. The discovery challenges ...

Many of the most interesting bodies in our Solar System aren’t planets, but the moons that orbit them. They have active volcanoes, hydrocarbon oceans, geysers, and moon-wide oceans buried under icy ...

Astronomers have uncovered a distant planetary system that flips a long-standing rule of planet formation on its head. Around the small red dwarf star LHS 1903, scientists expected to find rocky ...

Gas giants are large planets mostly composed of helium and/or hydrogen. Although these planets have dense cores, they don't ...

Gas giants possibly developed slowly in the solar system. They developed cores layer by layer within a disk of ice and dust ...