In the previous episode #13, we looked at what happens when three spheres—planets, soap bubbles, and water droplets—collide. This time, we will look at planetary collisions, specifically the theory ...

Known as the giant-impact hypothesis, this proposed event involves a collision between Earth and a hypothetical Mars-sized protoplanet astronomers call Theia.

During Earth’s early days, a gargantuan collision left our planet spinning at an angle. That slight incline allowed life as ...

From the primordial heat left behind by Earth’s formation to the continuous energy released by radioactive decay, discover ...

Discover how NASA's Webb Telescope reveals distant young solar systems colliding, turning Mars-sized worlds into dust and ...

A brief reviewWritten by David Baker, who earned a master's degree in history at the University of Calgary and the world's ...

What would happen if an asteroid struck the Earth? We spoke with a NASA planetary scientist who is working to find out.

In September 2022, a NASA spacecraft violently smashed into a tiny asteroid as a test of planetary defense. Now, a new probe ...

Astronomers have uncovered compelling evidence of two supermassive black holes spiraling toward a potentially spectacular ...

Dust around other stars offers clues to collisions involving planetary embryos and the disruption of established systems.

Astronomers have used NASA's Chandra X-ray Observatory to break down the cause of a remarkable formation of radio waves they ...

The James Webb Space Telescope is helping astronomers study planetary collisions in other star systems like the type scientists believe formed the moon billions of years ago. Credit: NASA / ESA / CSA ...