ScienceMind-BlowingIn the year 1054 AD, there was an explosion in the sky so bright that it was visible for 23 days straight, even during the day.314k
ScienceMind-BlowingA neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.82k