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 ...

ESA’s Integral observed space for 22 years, uncovering gamma-ray bursts, black holes, and gravitational waves.

The gamma-ray burst from OP 313 ... Its high-resolution imaging camera, weighing 1,200 kilograms, helps decode high-energy cosmic events like black holes, dark matter, and supernovae.