Neutron stars may rival black holes in their ability to accelerate powerful jets of material to nearly the speed of light, says a group of scientists from the Netherlands and Australia. An artist’s impression of the binary system PSR J1023+0038: the extremely dense, rapidly-spinning neutron star, just 10-15 km in size, is in a close orbit with a more normal companion star. The strong gravity of the neutron star pulls gas from its companion, which...