› added 7 years ago

638

TIL That, despite the relative rarity of ring galaxies, our photograph of Hoag's Object reveals yet another ring galaxy in the background.

Read more nasa.gov

via reddit.com

AkMa TIL elephants are the only mammal other than humans which have chins.
oRDdr TIL that during WWII, the British developed a covert pistol called the 'Welrod'. This bolt-action, integrally suppressed firearm was so quiet that it could eliminate a target without alerting nearby enemies.
W1DL 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.
69lrX TIL old batteries contained cadmium, a toxic heavy metal. These batteries should not be disposed of in regular household trash at the end of their life.
JMXV TIL that a Canadian politician, late to his own dinner party, may have inadvertently initiated the fall of the USSR.