The map was generated using data collected by the Gaia telescope, located 930,000 miles from Earth.

In 1821, Gregor MacGregor made a fortune off of European elites by selling them shares in his fake utopia — then got off scot-free.

As a double agent for the British, Juan Pujol García used his espionage skills to help orchestrate the Nazis' downfall on D-Day.

For two years, Charles Ng and Leonard Lake enslaved and brutalized upwards of 11 people — until Ng tried to steal a torture device.

If his own confession before his brutal execution is to be believed, then Peter Niers slaughtered 544 people — 24 of which were pregnant women he killed for their fetuses.

From Shirley Temple to the Two Coreys, these iconic child actors endured hardships invisible in their onscreen lives.

From a 40,000-year-old wolf head preserved in Siberian ice to the first black hole ever fully visualized, this year's best science pictures left us astounded.

Frank Lentini, the "Three-Legged Man," went on to have a successful career thanks to his parasitic twin.

After his father was assassinated, Robert Todd Lincoln kept an insanity file on his mother that he later used to have her committed to an asylum.

The six-foot, 6,000-pound Diprotodon was the largest marsupial to have ever existed.

Dudley "Mushmouth" Morton, a World War II submarine ace so named for his pronounced mouth, sank 19 enemy ships while commanding the submarine Wahoo in the Pacific.