Earth’s magnetic field was rattled by a solar outburst that arrived with almost no warning, lighting up skies and briefly ...

Of the seven Earth-sized worlds orbiting the red dwarf star TRAPPIST-1, one planet in particular has attracted the attention ...

Later in December, the 3I/ATLAS interstellar comet will get as close to Earth as it ever will. Here's what to know.

"During the early solar system's game of cosmic billiards, Earth was struck by a neighbor,” said Dauphas. “It was a lucky shot. Without the moon's steadying influence on our planet's tilt, the climate ...

Discovered in late June and confirmed as the third known interstellar object in July, 3I/ATLAS has raced through the inner ...

Emily Simpson has loved space since she was a 10-year-old kid celebrating her birthday at a planetarium. Now a recent Florida Tech graduate, she leaves with not only a dual degree in planetary science ...

About 4.5 billion years ago, the most momentous event in the history of our planet occurred: a huge celestial body called Theia collided with the young Earth. How the collision unfolded and what exact ...

About 4.5 million years ago, a great cosmic dog kicked past our Solar System – and its effects may still be seen today.

In the current issue of the journal Science, researchers determine the possible composition of Theia. The impactor’s composition allows conclusions about its place of origin. It is located in the ...

Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of Earth’s mantle and ejecting a huge debris disk that later formed the moon.

Nearly 4.5 million years ago, two enormous, blazing stars swung close to the solar system. They did not touch the sun, but ...