We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

This is a good time to see the Milky Way, which is part of our own galaxy. Looking to the south from late evening ... In the pre-dawn sky, Saturn is in the south east and lower down in the east is ...

Ancient Greek astronomers were the first to gather knowledge about space exploration. Richard Branson and Jeff Bezos could ...

Space is a very big place, and as such, it's full of mysteries that scientists can't explain. Some of this is simply because it's impossible to fully observe, thanks to its sheer size and the ...

Past theories put a collision between the two — resulting in a new elliptical galaxy dubbed Milkomeda — as probable if not inevitable.

Milky Way's chance of colliding with galaxy billions of years from now? New study puts odds at 50-50 by Marcia Dunn ...

Asteroids with ‘unstable orbits’ hide around Venus—do they threaten Earth? New research on the orbits of these mysterious asteroids near Venus stress the need for better space rock surveillance.

Both already collided with other galaxies in their ancient past and, according to many, seemed destined for a head-on crash. Past theories put a collision between the two — resulting in a new ...

Past theories put a collision between the two — resulting in a new elliptical galaxy dubbed Milkomeda — as probable if not inevitable.

(CNN) — A collision between our Milky Way galaxy and its largest neighbor, the Andromeda galaxy, predicted to occur in about 4.5 billion years, has been anticipated by astronomers since ...

Past theories put a collision between the two -- resulting in a new elliptical galaxy dubbed Milkomeda -- as probable if not inevitable. Some predictions had that happening within 5 billion years ...