It is extremely unlikely that a neutron star (or any star or planet) will collide with the Earth, so this is not something that you need to worry about, however, if a neutron star were to collide with the Earth, the Earth would be captured by the intense gravitational field of the neutron star, and would be absorbed by the star. Under sufficient pressure, electrons and protons will merge to form neutrons, and so the atomic matter of which the Earth is composed can be converted into pure neutrons.
It would ruin your whole day. Celestial mechanics makes this a non-existant threat, though, so you are relatively save. The collision of the two planets would destroy all life on earth and create a much larger planet, since the speed of collision would probably not allow for much to reach escape velocity.
we would all obviously die
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Exactly the same as outside, but the debris would travel farther because there is no resistance in the vacuum. Outside the vacuum the explosion would happen instantaneously once the anti-particles collided with oxygen.
The temperature on Earth will become so hot that no living animal, human or plant could survive.
In all probability - not that this scenario would happen - but the resulting combination of masses, would push the combined "stars" over the Chandrasekhar limit and a black hole would form.
Both planets would be destroyed, as the gravitational pull would rip off matter from both planets, and they would be ripped apart.
The world would implode
The collision will destroy all life on Earth. The moon is 2,159 miles in diameter. So if it hits, it will leave a huge impact basin thousands of miles across
Hardly any - they are very far away. However, a supernova (which would come before a neutron star) could have catastrophic effects on Earth, if it were to happen in our neighborhood (up to a few thousand light years!).
the particles would split tocreate multiple unstoppable objects
Smh its easy it makes a granatial/basaltial mixed rock
you get freezing rain
Collided Into would be with a stationary object while "with" would be with another moving object.
if a planet was close to earth it would cause earthquakes and more. if it collided if earth depending on the size if it is big it will collide with earth.
A star 100 times the mass of Jupiter would barely be massive enough to be a star at all. However, the collision would probably be bad for the Earth and us, its inhabitants.
Smaller. Something as big as the Earth would have so much gravity that it would probably have collided with something else and been eliminated