Star light, star...REALLY bright. Astronomers have calculated the total amount of starlight that's been emitted since the universe began, and it's a lot: 4 x 10^84 photons...about as much as our sun would emit in 100 billion trillion years. The image shows an artist's conception of gamma rays bursting from far away galaxies, and was created by Aurore Simmonnet/Swift/@nasa. 🌌🌠 . . . . . . . . . . . . #news #sciencenews #nasa #science #stars #space #cosmos #art #artist #galaxy #universe #starlight #bright #shine #star #cosmos #astronomy #physics #light