TIL that a neutron star can have a mass similar to our Sun but be only about 30 km across. One such neutron star spins at an incredible 43,000 rpm, rotating 716 times each second. This makes it one of the fastest-spinning objects in the universe.
https://en.wikipedia.org/wiki/PSR_J1748%E2%88%922446ad
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1ersm8o/til_that_a_neutron_star_can_have_a_mass_similar/
