A measurement of all the starlight ever produced
..How much starlight has our universe produced? According to a new study, stars have radiated 4×1084 photons since the start of the universe 13.7 billion years ago. That's the number 4 with 84 zeros behind it. Sharing is caring! 0. Tweet. 0. Share. 0..
EarthSky. Dec 05, 2018 11:55 UTC