Secrets of saturn

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

The Sun’s surface often looks speckled with darker regions. These are sunspots – cooler patches that form as a result of the Sun’s complex magnetic field preventing heat from reaching localised areas

The prospect of life on Mars – Earth’s planetary next-door neighbour, an alien world that betrays tantalising hints of a watery past – has bewitched humanity for centuries. From the ‘canals’ seen by a