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

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 ...

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

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

Planetary alignments aren't rare, but they can be when they involve six of the eight planets in our solar system.

Students were taught about different seasons, phases of the moon, and other out of this world lessons by Dunlap, who travels ...

The six planets were visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, Venus, Jupiter and Saturn should be visible to the naked eye. You'll need a ...

Plate tectonics give Earth its mountains, earthquakes, continental drift and maybe even helped give rise to life itself. But ...

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

The seven planets will not be perfectly aligned, but will appear in an arc across the sky due to their orbital plane in the ...

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) ...

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