Mercury is the closest planet to the sun, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Mercury orbits ...

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

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...

The building blocks of life could have been delivered to Ceres by one or more space rocks from the outer asteroid belt.

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

The OSIRIS-REx mission returned to the sample to Earth in September of 2023, and these studies show that it contains amino ...

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

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

Astronomers have discovered extremely powerful winds pummeling the equator of WASP-127b, a giant exoplanet. Reaching speeds ...

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...