That isn’t the only way to measure gamma radiation, though, and [Alan] has a great circuit to measure even relatively weak radiation sources. It uses a very small photodiode, and draws so little ...

Gamma rays emerging from neutron stars at the hearts of supernova explosions could solve the mystery of dark matter — in just ...

By using mathematical equations that relate the duration of the flare to the size of the region emitting the bursts, Gaidos says the rapidity of the second flare suggests that the region emitting the ...