From auroras streaking through space to surreally beautiful views of Earth from above, these Scott Kelly photos show the wonders of spaceflight.

First up: leap year doesn't actually happen every four years.

From hot-air balloons on Jupiter to nightlife on a planet with no star, these images are truly out of this world.

See photos and hear the unlikely survival tale of the giant tree lobster insect, somehow the most romantic creature ever to terrify humankind.

All of these men were accused of heinous crimes, but all — thanks in part to their wealth, fame, and power — got away with it. These are some of the most enraging famous acquittals in recent history.

For decades, we've lived in fear of these six supposed carcinogens. But the facts behind these cancer myths reveal why none of them will actually harm us, and how these crazy claims first got started.

Who's worse? The dictator who leads one of history's greatest waves of terror or the political schemers who put him in power for their own selfish ends? Read on and judge for yourself.

Vintage images help reveal the surprising origins of the first guide dog school ever that still operates in New Jersey to this day.

From why they use Viagra to why we once drank their urine, these panda facts reveal everything you never knew about nature's most mysterious bears.

From the shocking ticket prices to the sad halftime show, these Super Bowl 1 facts and images reveal just how much has changed over time.

From the book he died reading on the toilet to the one person who's been allowed in his bedroom, these Elvis Presley facts reveal rock's weird side.