King of the solar system

Ten years ago, Pluto emerged from the gloom at the Solar System’s ragged edge – and a new world came in from the cold. Five billion kilometres (3 billion miles) from Earth, on 14 July 2015, NASA’s pia

New model suggests Hawking radiation is speeding cosmic decay Scientists have long predicted that the Universe’s lifetime is effectively forever – specifically, 101100 years. But now scientists from R

Scientists distinguish between weight and mass, which may seem pedantic until you see what happens on a world where gravity is radically different to Earth’s

BEST TIME TO SEE: From 03:30 BST (02:30 UT) all month. Closest approach on 12 August Venus is the brightest planet that can be seen from Earth. At its peak brightness, when 22% illuminated, Venus appr

Best time to see: 31 August, 04:00 BST (03:00 UT) Altitude: 48° Location: Taurus Direction: Southeast Features: Colour, subtle atmospheric banding, moons Recommended equipment: 200mm or larger It’s su

There’s a reason why Earth has seasons – and it’s about being totally tilted.