Subs offer

Illustration showing the disc around star V883 Orionis. Studies have revealed the chemical composition of water in the disc, indicating how water gets delivered to planets and other bodies around a star. Credit: ESO/L. Calçada

Earth’s water formed billions of years ago, long before the Sun, say astronomers

leo lion constellation

How to see star Zosma, the rump of Leo the Lion

What causes seasons on Earth? Credit: steved_np3 / Getty Images

What causes seasons on Earth?

A view of Venus captured by the Mariner 10 probe. Credit: NASA/JPL-Caltech

What makes Venus so special?

An image of 'sun rays' or crepuscular rays on Mars, as seen by NASA’s Curiosity Mars rover on 2 February 2023. Credits: NASA/JPL-Caltech/MSSS/SSI

NASA Curiosity rover spies incredible sun rays on Mars

Valles Marineris on Mars is the largest canyon in the Solar System, extending over 3,000km. It is as much as 600km wide and as much as 8km deep. Credit: NASA

If there’s life on Mars, it could be common across the Universe

Constellation Orion. Credit: David Wall / Getty Images

Best constellations in the night sky, season-by-season

Star Rigel in orion

A guide to star Rigel

Illustration of the constellation Gemini

A guide to the constellation Gemini

A view of galaxy NGC 1275 captured with the Hubble Space Telescope's Advanced Camera for Surveys, July and August 2006. Credit: NASA, ESA and Andy Fabian (University of Cambridge, UK)

Understanding the Universe: what we know and what we’ve yet to discover

Artist's impression of an asteroid heading towards Earth. Credit: Maciej Frolow / Getty Images

Are we prepared for a maverick asteroid hitting Earth?

Star Diary astronomy podcast. Find out what's in the night sky, March 2021

Star Diary 6 to 12 March, 2023

Lord Martin Rees with Sir Patrick Moore at the opening of the South Downs Planetarium in 2002

The Astronomer Royal’s tribute to Patrick Moore

Artist's impression of a supernova destroying a planet. Credit: Mark Garlick / Science Photo Library

Is Earth in danger if Betelgeuse goes supernova?

Finding poetry in the Northern Lights. Credit: Jia-yi Liu/folio

Finding poetry in the Northern Lights