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

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

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

Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

Starting up again Saturday, a sweeping view of our solar system will glow in the night sky. The planetary alignment, or a ...

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

Tonight and throughout January, stargazers can see a planetary alignment in the night sky or what some are calling a ...

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...

Further simulations on flybys into the inner Solar System revealed one of our own planets might be flung out of the ballpark ...

Skywatchers: A six-planet alignment peaks this week as Mars, Jupiter, Uranus, Neptune, Venus, and Saturn come together for ...

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