Sunburned? Extragalactic Radiation Is a Tiny Bit to Blame
Thursday, August 11, 2016 - 16:11
in Physics & Chemistry
Every second, every square meter of Earth is bombarded by 10 billion photons born beyond the Milky Way, according to a new study. That may sound like a lot, but it's just 10 trillionths of the total number that bathe every square meter of the planet.