She mapped our solar system's "alternate fate" had it housed an extra ... formation of a planet that is at least twice the size of Earth's mass—a super-Earth—instead of an asteroid belt.

Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, ...

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. Computer simulations suggest that there is an undiscovered Earth-like ...

Asteroids that orbit close to the Earth inevitably cause us some anxiety due to the even remote possibility of a collision.

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.

and Bennu’s samples are pivotal in our understanding of what ingredients in our solar system existed before life started on Earth.” If that wasn’t enough, another team—led by meteorite ...