Stargazers will be treated to a dazzling six-planet "alignment" this January.

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

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

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

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

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 ...

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

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

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Because planets always appear in a line, the alignment isn't anything out of the norm. What's less common is seeing so many ...

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) ...