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.

We made it to the last day of Amazon’s extended Prime Day extravaganza. And, yeah, we’re a little exhausted, but after three days of lightning deals and all-time low prices, there are fewer than 24 ...

The Andromeda Galaxy, located 2.5 million light years away, has fascinated observers for centuries. Once believed to be part of the Milky Way, everything changed in 1923 when Edwin Hubble identified ...