The bigger of the two asteroids is travelling at a speed of 6.4 km per second while the smaller one is racing at 7.2 km per second. Despite their velocity, NASA confirms they will safely pass by, ...

The first hurdle is finding a black hole close enough to Earth. The nearest known black hole, Gaia BH1, is 1,500 light-years away — too far for a feasible mission. Bambi suggests a black hole within ...