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.

Located just 154 light-years away, this planet is nearly twice the size of Earth and orbits a cool red dwarf star. Though not ...

Astronomers have spotted centimeter-sized “pebbles” swirling around two infant stars 450 light-years away, revealing the raw ...

Hubble Space Telescope imagery Neptune has revealed that the planet's clouds are disappearing. Credit: NASA Goddard Space Flight Center ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

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

These are the best star projectors on the market ahead of Amazon Prime Day, as there's something to suit all needs and budgets out there.

News and research on the formation of galaxies. From the Milky Way to Andromeda Galaxy, see astronomy images of splendid galaxies in the universe. Read the latest research discoveries.

I/Atlas was first spotted on July 1 by the Asteroid Terrestrial-impact Last Alert System (Atlas) survey telescope in Río ...