Astronomers believe they have discovered a rare giant flare erupting from an extremely magnetic dead star, or magnetar, that is bright enough to light up an entire galaxy. If true, …
Artistic concept: During a typical gamma-ray burst (GRB), a stream of particles pierces a star as it collapses into a black hole. Gamma bursts are the most energetic and brightest …
Image source: NASA Created from 14 years of data collected by NASA’s Fermi gamma-ray space telescope, a full-scale time-lapse movie brings the universe to life. Our sun occasionally shines brightly, …
A balloon carrying a cable car with a telescope takes off from Alice Springs, Australia.Image source: GRAINE collaboration A stack of radioactive-sensitive films carried through the sky by a balloon …