An unnamed astronaut aboard the International Space Station recently captured this stunning photo of "gold rivers" in eastern Peru. These pits stand out unusually brilliantly here, as they are usually obscured by cloud cover or outside the sun's glint point.
This historic photograph was captured in 1861, on a day when the United States teetered on the brink of Civil War and Abraham Lincoln was being sworn in as the country's 16th president. And yesterday, one of the few prints of the photo in existence sold for a whopping $27,500.
It's a good day at the World Wildlife Fund when one of your camera traps captures a photo so rare, you won't find another like it taken in the last 15 years. The photograph shows a "saola," an animal so rare it is more commonly known as the 'Asian Unicorn' and hasn't been photographed in the wild since 1998.
At a public lecture in Pittsburgh in 1934, four hundred lucky students were privy to a lecture by Albert Einstein, in which the great man mathematically derived his famous mass-energy equivalence equation: E=mc2. What you see above is a photo from that lecture, and what is thought to be the only surviving photo that shows Einstein working on that derivation.