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

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...

The so-called 'planetesimal belts' are filled with tiny millimeter-sized particles created by collisions between comets.

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

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

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

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

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

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

In Earth's upper atmosphere, a fast-moving band of air called the jet stream blows with winds of more than 275 miles (442 km) ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

The six planets were visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, Venus, ...