New aurorae detected on jupiter’s four largest moons

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

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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

BEST TIME TO SEE: Nights of 9/10, 10/11 and 11/12 July A full Moon occurs when the Moon is opposite the Sun in the sky or, in other words, when its ecliptic longitude is 180° from the Sun. The eclipti

On 23 July 1999, Space Shuttle Columbia launched its heaviest-ever payload: the Chandra X-ray Observatory, a new flagship telescope for NASA. It is the world’s most powerful X-ray telescope, capable o

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