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

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 ...

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

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

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

This type of orbit means any water on the planet would ... are more massive than Earth yet lighter than ice giants like Neptune and Uranus, and can be made of gas, rock or a combination of both.

HELENA — The planets are aligned. Six planets, Mars, Jupiter, Uranus, Neptune, Venus and Saturn can be seen in the night sky.

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

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

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

Research indicates an interstellar object might have altered the orbits of Jupiter, Saturn, Uranus, and Neptune billions of years ago ...