› added 11 years ago

103

TIL that the Russian cosmonaut Sergei Krikalev traveled a 48th of a second into the future. He spent a total of 803 days in space traveling at 18,000 mph, causing appreciable time dilation.

Read more reddit.com

via reddit.com

b97dE TIL that playing "pink noise" - the sound of uniform static - while sleeping has been found to improve sleep quality and also help memory.
knM1 TIL Serial killer John Wayne Gacy (killing at least 33 young men) was very active in local community activities. As a result of his contributions, he met and was photographed with then-First Lady Rosalynn Carter and given special security clearance by the secret service.
Vo9D TIL Sweden warrantlessly wiretaps all telephone and internet traffic that crosses its border
ADmrg TIL that the ‘sound’ produced by an ultrasound machine is made from applying an electrical current to piezoelectric crystals
QJXma TIL the heir to the Habsburg dynasty, which dominated much of Europe for centuries, is a 22-year-old race car driver