"The universe is filled with a range of three-body systems, including the closest stars to Earth, the Alpha Centauri star ...

For decades, scientists have studied small satellite galaxies to better understand how the universe’s smallest galaxies ...

The puzzle of predicting how three gravitationally bound bodies move in space has challenged mathematicians for centuries, ...

Over the last 10 years, the Hubble Space Telescope has taken pictures of Altjira and a 2011 study found that it appears as ...

Can asteroids orbit each other in pairs of three, also called a three-body or triple system, like stars? This is what a ...

The Hubble Space Telescope’s remarkably long service life and its string of astonishing contributions to astronomy belie its troubled history. Long before its launch into low Earth orbit in 1990 ...

Here's everything you need to know about why Saturn's rings are about to disappear — and when they will return.

A new image from the Hubble Space Telescope shows one of the most famous and beautiful objects in the night sky.

Hubble and its fellow observatories give us ... Endeavour performed five days of spacewalks to repair the telescope in orbit some 353 miles (569 kilometers) above the Earth. The repair worked ...

Hubble was built to be tuned up in orbit. But it wasn't designed for the major overhaul NASA astronauts undertook during its fourth servicing mission, 3B, in March 2002. They delved into the ...

The puzzle of predicting how three gravitationally bound bodies move in space has challenged mathematicians for centuries, ...