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

ranging from irregular town-size space rocks to massive rounded bodies that are potentially big enough to be considered planets in their own right. So exactly how many solar system moons have we ...

Sheppard and his fellow astronomers hope that these moons can help explain the days of the early solar system, and how the planets and their moons became the way they are today. Do you have a tip ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.

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

January's new moon means ... for viewing planets. You don't have to break the bank, though; we've selected telescopes for a range of budgets. If you want to look beyond our solar system, we ...

15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything ... of the Earth-Moon system and the broader solar system. The ...

The solar system consists of stars, the Sun, 8 planets, dozens of moons, millions of asteroids, comets, and meteoroids. It orbits the centre of the Milky Way galaxy at about 515,000 mph.

"Because most solar system moons rotate very slowly (keeping the same face towards their planet as they orbit, as our moon does to Earth), any ring particles must be orbiting the moon much faster ...

The celestial bodies in our solar system take many forms. Some are made of rock, others gas, and others even ice. The farther away from the Sun something is, the colder is gets and this has allowed ...

Although it's being mistakenly promoted as a "rare planetary alignment," one of the best "planet parades" in half a century ...