On 16 Sunday December, comet 46P/Wirtanen will make one of the 10 closest approaches of Earth in 70 years – and you may even be able to see it without a telescope

On 16 Sunday December, comet 46P/Wirtanen will make one of the 10 closest approaches of Earth in 70 years – and you may even be able to see it without a telescope
Tabby’s Star has baffled astronomers for years, as it shows completely unexpected light variation
Some 290 million years ago, a star much like the Sun wandered too close to the central black hole of its galaxy
The object is thought to be the missing link between planets and stars, with a mass up to 80 times that of Jupiter
Rapidly spinning stars that produce X-rays at more than 100 times the peak levels ever seen from the Sun have been discovered
The strange behaviour of black holes has become somewhat less mysterious recently, according to NASA’s Swift spacecraft and NuSTAR satellite