M1 ( Crab Nebula) (Armin Unterwandling)

M1 ( Crab Nebula)

M1 (Crab Nebula) is one of the brightest supernova remnants in the night sky. As the name supernova remnant suggests, it's the leftover from a star's explosive death. When a massive star runs out of fuel, the outer layers lose their support from the heat and pressure in the star's core. They crash down towards the center of the star and then rebound in a huge explosion what we call a supernova.
What we see now as the Crab Nebula is all the gas mostly hydrogen spewed out from inside that dying star. You might wonder why we call it both a nebula and a supernova remnant - a supernova remnant is essentially a type of nebula, and a nebula is a broader bucket category for patches of gas and dust shining in the sky.
The Crab Nebula is mostly gas. But, a curious object lurks at the center: the leftover core from the dead star, known as a pulsar. Pulsars are a particular kind of dense neuton star with a powerful magnetic field. Spinning extremely fast - anywherefrom a few to a hundred times per second- their jets of matter spew out and sweep over Earth like a lighthouse, producing the pulse we observe that give these zombie stars their name. The pulsar in the Crab Nebula spins 30 times per second and produces the glow seen in the center of images of the nebula.
The Crab Nebula is about 10 light-years across, the equivalent of about 10 trillion miles. The gas of the Crab Nebula is expanding through space at over 600 miles per second.
The star that created the Crab Nebula exploded in 1054. Even non - astronomers probably noticed its appearance, since the supernova explosion was so bright it was comparable to the full moon, six times brighter than Venus. It was bright enough to be seen during the day for an entire month.

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