The dense remains of massive stars generate powerful jets of gas and dust that move hundreds of millions of miles per hour, according to research published last week
A collision of two extraordinarily dense, collapsed stars in the distant universe is providing potential clues to the axion, a dark matter candidate first proposed half a century ago.
A team of scientists found a compact object 40,000 light-years from Earth that is either a very massive neutron star or an itsy-bitsy black hole, but they’re not sure which.