Earth’s origin story has always had missing pages, from the chemistry of its first crust to the ingredients that seeded life.

Perihelion is the point at which an orbiting body is closest to the sun. The word comes from Greek and literally means around (peri) the sun (helios).

TRAPPIST-1e, an Earth-sized world in the system’s habitable zone, is drawing scientific attention as researchers hunt for ...

Comet 3I/ATLAS will get closest to Earth on Dec. 19, and astronomers will be watching.

In a discovery that's fit for a movie, Northwestern University astronomers have directly imaged a Tatooine-like exoplanet, orbiting two suns. While obtaining an image of a planet beyond our solar ...

In the dense environment of the early universe, dark matter particles would collide with, and annihilate, each other, ...

By studying faint distortions in galaxy shapes across a vast region of sky, scientists probed the hidden structure of the universe. In the standard picture of the universe, nearly everything is hidden ...