Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

Scientists simulated what would happen if a medium-size asteroid were to strike Earth. One of those space rocks, asteroid ...

Uranus has the craziest tilt in your Solar System. Its tilt is about ninety-eight degrees. That means its north pole is ...

Over the next several weeks, astronomers will be looking closely at an asteroid called 2024 YR4 that could be as big as a ...

Over the next several weeks, astronomers will be looking closely at an asteroid called 2024 YR4 that could be as big as a ...

Definition: A terrestrial planet refers to a planet (celestial body) that is made up of silicate rocks or metals. Description: The term terrestrial is derived from the Latin word 'terra', which means ...

The farthest planet from the Sun ... 0.21 miles per second (0.34 km/sec), making these winds supersonic by our terrestrial standards. The recently discovered extraterrestrial jet stream is ...

It comes after conspiracy theorists in 2019 said they had found alien faces, skulls and primitive cravings in photos of the red planet, but these claims were not backed up by scientific evidence.

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

These rocky bits eventually coalesced to form the terrestrial planets. However, at a distance of around 4 astronomical units from the Sun (AU; 1 AU is the average Sun-Earth distance of 93 million ...