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

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

A new study suggests that the explosive deaths of the universe's earliest stars created surprising quantities of water that ...

"An epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners of the ...

A new study reveals Quipu, a vast network of galaxy clusters and superclusters, being dubbed the largest structure in the known universe.

Newly discovered Quipu, a superstructure in which galaxies group together in clusters and clusters of clusters, is the ...

Two exciting new studies detail the life-supporting contents of a 4.3-ounce sample of the asteroid Bennu. The OSIRIS-REx ...

Helium can help scientists detect the speed and direction at which we’re moving through space. Deuterium, which is left over ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

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.

Cosmic rays coming from outside the Solar System bring these particles closer to the Sun, where they experience changes ...

Caribbean sounds help bring the Solar System to life and make space education more inclusive.