› added 10 years ago

95

TIL that two of Saturn’s moons, Janus and Epimetheus, only have an orbital altitude difference of 50km. Due to this, one moon will ‘catch up’ to the other every four years, and they will begin a 100 day process in which they exchange orbital positions.

Read more saturn.jpl.nasa.gov

via reddit.com

NAa1 TIL during the Chernobyl Disaster, Aleksandr Lelechenko saved his colleagues from radiation exposure by walking through radioactive water three times in place of his younger colleagues. He died less than 2 weeks after the disaster.
eayk TIL that a Chinese law promulgated in 1981 requires that every citizen over the age of 11 plant at least one tree per year.
5Vxj9 TIL about the island of Attu—the Westernmost point of the United States and site of the only WWII land battle on US soil
vNpj TIL the U.S. Senate used the same gavel for 165 years, from its inception until 1954 when Richard Nixon broke it.
d41r TIL - Many major pop hits of the 90s and 2000s were produced/written by the same guy