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

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

Four planets will be in the parade in January, while seven will align in February. Here's how to see the events.

While planets circle the sun in what's called and heliocentric orbit, they rarely fall together in what appears to the human ...

Tonight and throughout January, stargazers can see a planetary alignment in the night sky or what some are calling a ...

We'll see six planets – Mars, Jupiter, Uranus, Neptune, Venus and Saturn – but not all of them will be visible to the naked eye. You'll need high-powered binoculars or a telescope to see ...

"A parade of planets, also sometimes referred to as a planetary alignment, is when several planets in our solar system appear ...

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 ...

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 ...

Starting at 12:30 p.m. ET (1730 GMT) on Saturday (Jan. 25), astrophysicist Gianluca Masi of the Virtual Telescope Project ...

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.