A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

When you look at the solar system, you might notice that the planets' orbits are tilted, and oddities in the protoplanetary ...

Our Solar System hides worlds of fire and ice, storms that outlast civilizations, and mysteries still beyond human reach.

Wave-particle interactions across the solar system can have a wide range of effects though they are caused by the same set of ...

Damanveer Singh Grewal suggests that planetesimals in the early solar system emerged from a succession of high-energy ...

From GPS to innovations in computing and optics, technologies developed for space research at UC Santa Cruz touch nearly ...

From lava worlds to gas giants, NASA says the variety of these worlds is staggering—and that signs of a further 8,000 distant ...

The first sign of trouble emerged in early May. After the Trump administration suffered a series of legal setbacks in federal ...

Who hasn't looked into the sky and wondered if there's life out there, somewhere, looking back at us? Is it possible there's ...