Before defining what a light-year is, we should define what a light-year is not: It is not a measure of time, but rather a ...

Imagine waking up one morning to the news: a black hole is drifting close to our solar system. It sounds like the plot of a .

Sagittarius: Here are you free predictions for the week, from July 13 to July 19 ...

Saturn will rise above the eastern horizon beneath the stars of the constellation Pisces shortly before midnight for viewers ...

Centimeter-sized pebbles have been detected in protoplanetary discs using e‑MERLIN, filling in a critical phase of planet ...

In new research, University of California, Irvine astronomers describe how more than 200 known exoplanets are likely much ...

John Casani, who has died aged 92, was an American spaceflight engineer who led the teams that pioneered Nasa’s explorations ...