haydenplanetarium.org

kb0e TIL that the number of planets in the observable universe outnumber the sum of all sounds, words, and noises uttered by every human who has ever lived.
yBxp TIL entire 50-year operating budget of NASA from 1958-2008 was approximately 1/5th the cost of the 2008 Bank Bailout
5wXR TIL Neil Degrasse Tyson was an eye-witness to 9/11, he wrote a letter describing his horrifying experience.