A guide to what's up in the sky for Southern Australia

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M1 - the Crab Nebula (29th Dec 2025)

Distance: 6,500 light years

Catalogued as M1 and located in the constellation of Taurus, the Crab Nebula is the first on Charles Messier's famous list of things which are not comets. In fact, the Crab Nebula is now known to be a supernova remnant, an expanding cloud of debris from the death explosion of a massive star.

The violent birth of the Crab was witnessed by astronomers in the year 1054.

The Crab Pulsar, a neutron star 28–30 kilometres across with a spin rate of 30.2 times per second, lies at the centre of the Crab Nebula. The star emits pulses of radiation from gamma rays to radio waves. Roughly 10 light-years across, the nebula is still expanding at a rate of about 1,500 kilometres per second. The Crab's dynamic, fragmented filaments were captured in visible light by the Hubble Space Telescope in 2005.