[Drew68]

There are several potential compact objects (neutron stars) which feature extreme velocities, such as B2011+38, B2224+65, IGR J11014-6103, and B1508+55, with the latter possibly exhibiting a velocity of 1100 km/s.

What would happen if an extreme velocity neutron star entered our solar system?

Short answer; it would suck.

A Neutron Star Collision With Earth

And the 90 minute National Geographic Channel program:

Evacuate Earth: Death By Neutron Star

[Sergio]

Thanks for the links.

[Sawdring]

The “Forge of God” by Gregg Bear was one of the best books on the destruction of the Earth that I have read.

[West Texas Chuck]

I say let ‘em crash.

[rdl6989]

That would be a bad day at the office for sure.