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

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

A European-Japanese spacecraft has beamed back some of the best close-up photos yet of Mercury's north pole as part of only ...

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

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

A planet parade is when several of our solar system's planets are visible in the night sky at ... The planets can never fully ...

Stargazers will get a peek at what's been called a "parade of planets," when up to seven planets may appear to line up.

The building blocks of life could have been delivered to solar system dwarf planet Ceres by one or more space rocks from the outer asteroid belt. NASA OSIRIS-REx asteroid sample return team has ...

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

Jan. 15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece of the puzzle to ...