Might the first moments of planet formation be more understandable than ever before? Fresh observations suggest that the creation of worlds such as our own is perhaps happening right in front of us, ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today." ...

While astronomers have previously seen young discs that contain newborn, massive, Jupiter-like planets, McClure says, “we’ve always known that the first solid parts of planets, or planetesimals, must ...

In 2003, NASA-funded researchers spotted what was then the most distant object discovered in our Solar System. The dwarf planet, named Sedna after the Inuit goddess of the sea, was found over 12.9 ...

Harvard & Smithsonian have discovered a rare trans-Neptunian object, 2020 VN40, orbiting in perfect sync with Neptune.

Alone among known planets, Earth has vast oceans on its surface and its landmasses are marked with lakes and extensive river drainage systems. Water is the biosphere's lifeblood, and without it, Earth ...

“It’s the most massive [merger] so far,” says Mark Hannam, a physicist at Cardiff University, UK, and part of the LVK ...

Researchers suspect that two meteorites found in the Sahara Desert in 2023 may originally have come from Mercury, which would ...

Though our solar system and the movement of its planets appear relatively sedate, there are many things that could upset the ...

The Subaru Telescope has revealed a fourth member of the sednoids, a group of small bodies with peculiar orbits around the ...