The Sun unleashes a torrent of charged particles. Some of them slam into the Earth’s atmosphere, triggering breathtaking auroras in the night sky. But for equipment that’s orbiting our planet in outer ...

SpaceX is quietly adding a new kind of machine to its arsenal in Florida, not a rocket or a satellite but a cyclotron particle accelerator capable of firing protons at energies used in medical and ...

There is technology being perfected to make particle accelerators 100-1000 times lower cost. This would enable production of nuclear material for space propulsion that could reach up to 0.5% of light ...