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

Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

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

Six planets, Mars, Jupiter, Uranus, Neptune, Venus and Saturn can be seen in the night sky. You'll need binoculars or a ...

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

Sky watchers are in for a treat this month as the stars align to give amateurs a shot to see six planets at once.

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

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

Mercury, the closest planet to the Sun, completes an orbit – a year for the planet – in 88 days. Earth's year, of course, is 365 days, while at the upper end, Neptune takes a whopping 60,190 ...

Early 2025 is a good time for skygazing and spotting up to seven planets in the night sky – if you have a little help.