NASASpaceFlight.com Forum
General Discussion => Q&A Section => Topic started by: cube on 02/28/2022 01:19 pm
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Hello, I'm curious to know what would happen if I brought a small piece of neutron star back to Earth, would it stay in the same state as on the star? would it keep the same density?
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Google helps in times like this.
https://astronomy.com/magazine/ask-astro/2018/08/neutron-star-brought-to-earth#:~:text=A%20spoonful%20of%20neutron%20star%20suddenly%20appearing%20on%20Earth's%20surface,of%20our%20planet%20with%20it.
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- from link above.
A spoonful of neutron star suddenly appearing on Earth’s surface would cause a giant explosion, and it would probably vaporize a good chunk of our planet with it.
Assumption: energy would be close to the annihilation energy (E=mc^2).. handwaving wildly but close enough that no one on Earth would notice the difference.
E (Joules) = 900E9kg*(3E8 m/sec)^2 = 8.1E28 J.
according to:
http://www.madsci.org/posts/archives/mar2002/1015040902.Es.r.html, That is about the amount to vaporize the earths entire crust.
Please stay away from Earth with that neutron star chunk :-)
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- from link above.
A spoonful of neutron star suddenly appearing on Earth’s surface would cause a giant explosion, and it would probably vaporize a good chunk of our planet with it.
Assumption: energy would be close to the annihilation energy (E=mc^2).. handwaving wildly but close enough that no one on Earth would notice the difference.
E (Joules) = 900E9kg*(3E8 m/sec)^2 = 8.1E28 J.
according to:
http://www.madsci.org/posts/archives/mar2002/1015040902.Es.r.html, That is about the amount to vaporize the earths entire crust.
Please stay away from Earth with that neutron star chunk :-)
Roughly 10% of the mass of a neutron star is in the gravitational binding energy. Assuming that is released in the piece that got somehow teleported to Earth, aside from the thermonuclear reactions that alone gets you into the order of magnitude.
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That's impressive, I didn't think it would cause so much damage
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That's impressive, I didn't think it would cause so much damage
Its a coiled spring, compressed as much as this universe allows. (black holes have their own complications)
Coiled springs are dangerous.
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A cubic inch of neutron star would weigh about 2 billion tons which, as everybody has pointed out, would make the largest hydrogen bomb ever built look like a flea fart in comparison as soon as you released the gravitational pressure of the neutron star holding it together.