Crab Supernova shockwave?

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Offline GlentoranMark

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Crab Supernova shockwave?
« on: 08/05/2010 20:00:16 »
How long would it take to reach Earth... and has it reached us... and would we feel it?


Offline Soul Surfer

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Crab Supernova shockwave?
« Reply #1 on: 10/05/2010 22:22:19 »
An interesting thought.  The crab nebula is estimated to be about 6,500 light years away and was seen to happen about 1000 years ago.  now even if the shock wave was going at 10,000 miles per second this is still much less than 10% of the velocity of light so any physical shock wave could only reach us after more than 60,000 years.

Shock waves from supernovae are very important for the starting of the collapse of very tenuous interstellar gas to form stars but the disturbance to already formed stars and planets is minimal.  any disturbance comes from the pulse of electromagnetic radiation which we have already experienced.
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