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

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

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

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 ...

"This is, incidentally, why we sometimes observe planets appearing to approach closely to each other on the sky, as we view ...

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

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

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

Emily Simpson has loved space since she was a 10-year-old kid celebrating her birthday at a planetarium. Now a recent Florida ...

The research, yet to be peer-reviewed, sheds light on what could have changed the orbits of several planets in the solar ...

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

A rare parade of planets will light up the night sky throughout January. Six planets will be in alignment for the rest of the ...