Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may not be the full picture.

Mercury takes only 88 Earth days to orbit the sun.

Saturn may be difficult to see since it will be near the sun, according to StarWalk. It's not especially remarkable for a few ...

Finding a world like Earth elsewhere in the universe might mean looking for the right kind of solar system. A new discovery ...

The eight planets in our solar system orbit the sun in roughly the same plane, because they all originally formed from the same disc of debris around the sun. The line the sun traces across the ...

A planet parade is when several of our solar system's planets are visible in the night sky at the same time. There will be six planets visible this time around ... close to the sun right at ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

A planet parade is when several of our solar system's planets are visible in the night sky at the same time. There will be six planets visible this time around ... close to the sun right at ...

Astronomy fans know 2025 kicked off with a meteor shower, but another big spectacle is coming up that should be on your radar, too. Here’s what to look forward to and how to watch ...

everything's happening at around the same time. During the last few days of February, Mercury will make its appearance and the parade will increase to seven planets. This will be best viewed right at ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...