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

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...

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

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously ...

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

Using JWST and ALMA data, astronomers have spotted a superlong and narrow 'galactic contrail,' possibly produced by a black ...

Stretching billions of miles beyond Neptune, the Kuiper Belt is a vast ring of icy worlds — a frozen frontier where ancient ...

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