Science
Black holes, dark matter, gravitational waves and exoplanets: find out how astronomy is unlocking the secrets of the Universe.
A third of black holes in the Universe could be hiding from view
Euclid's quick data release, March 2025
NASA New Horizons measures how dark the Universe really is
Rings around strange worlds in the outer Solar System
A guide to the planets | Saturn
Saturn's rings make it the most eye-catching planet in the Solar System
Astronomers discover 128 new moons at Saturn
Which planet has the most moons?
A guide to the number of moons in the Solar System, and which planet is currently king of the moons.
Springtime is here! This week marks the first day of spring as the equinox arrives
Solstices and equinoxes explained
How Earth's tilt and orbit gives us seasons, solstices and equinoxes, and when they are occurring in 2024.
Ireland from space
A selection of images of the Emerald Isle from Earth orbit.
ESA Hera mission
The European Space Agency's Hera and DART missions will attempt to impact a near-Earth object and alter its path.
Andromeda Galaxy has a new 'galaxy moon' that's redefining our view of the early Universe
9 key things to know about this week's blood Moon lunar eclipse
Sizing up the Sun and the Moon, and why both look the same size in the sky
Saturn ring plane crossing, March 2025
Why is Mars red?
What gives the soil on Mars its red colour, lending our planetary neighbour its moniker the Red planet?
Webb's view of Lynds 483
We may have been wrong about why Mars is red this whole time, and the answer relates to life beyond Earth
How long does it really take to get to Mars?
How long would it take to drive or walk to Mars, and how long does it take actual space missions?
When does Easter fall and what does it have to do with the Moon?
Helix Nebula white dwarf may have destroyed a planet
Why do the planets orbit the Sun?
Snow on Mars
Mars's moon Phobos is spiralling towards the Red Planet and may one day form a ring system
Mars’s moon Phobos is being pulled towards its host in a process that could eventually tear it apart and create rings around the Red Planet.