Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

To make a planet reverse its path around the sun, something massive would have to force it into an altered orbit through its gravity. Astronomers have found planets around other stars with retrograde ...

There are about 15,000 satellites orbiting the Earth. Most of them, like the International Space Station and the Hubble ...

All the solar system’s planets follow nearly the same plane and direction as they orbit the Sun, and this is something that has fascinated astronomers for eons. That said, is it possible to explain ...

In very simple terms, low Earth orbit (LEO) is exactly what it sounds like: An orbit around the Earth with an altitude that lies towards the lower end of the range of possible orbits. This is around 1 ...

SpaceX has made trips to orbit routine. Satellites in orbit are vital to the modern world. Here's what you need to know about how we send things whizzing around the Earth. Stephen Shankland worked at ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. Despite the dangers posed to planet Earth by a comet or asteroid strike ...

Discover how the moon's gravity altered Chandrayaan-3's propulsion module orbit, creating a new trajectory in space ...