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

Five of the brightest planets will be visible to the naked eye. With help, you may even spot Uranus and Neptune.

Spotting one or two of the planets in our solar system is well worth a good skywatch, but seeing (almost) all of them in a ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

That said, finding a dark-sky area on a clear night towards the end of February will give you the best chance of spotting ...

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

The visitors in 1% of simulations dove straight into the solar system, travelling past Uranus' orbit and some even grazed Mercury's path and they ranged from two to 50 times the mass of Jupiter.

The visiting objects that yielded these near-match scenarios ranged from two to 50 times the size of Jupiter and plunged deep into the inner solar system, traveling far beyond Uranus' orbit and ...

On Jan. 13, 1986, astronomer Stephen Synnott, using data collected by NASA’s Voyager 2 probe, discovered three additional moons in orbit around Uranus. Those moons are Desdemona, Rosalind and ...

To see the whole shebang, you’ll need a pretty unobstructed view of the horizon in an area with relatively little light ...