IceCube, the kilometer-wide neutrino detector nestled deep beneath the South Pole, has traced a neutrino back to its far-flung birthplace: a supermassive black hole tearing a star to pieces in a galaxy 750 million light-years away.
After surviving the descent, the rover sent back this picture from the Martian surface.
Cygnus X-1, one of the first identified black holes, is much weightier than expected, raising new questions about how such objects form.
Researchers in Japan are enlisting an army of citizens to explore how storms on Earth create extreme bursts of radiation.
Experiment connects three devices with entangled photons, demonstrating a key technique that could enable a future quantum internet.