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This Day in History
Jimmy Hoffa disappears, 1975
On July 31, 1975, James Riddle Hoffa, one of the most influential American labor leaders of the 20th century, disappears in Detroit, Michigan, never to be heard…
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NASA’s Curiosity rover has detected powerful evidence for fast-flowing tributaries on the Red Planet in the form of ancient streambeds
On the 35th anniversary of the launch of space probe Voyager 1, explore six cool facts about the farthest manmade object from Earth.
Explore the incredible career of astronaut Neil Armstrong, who died Saturday at 82.
As NASA’s rover Curiosity continues the quest to find life on Mars, explore five key events that piqued the public interest in the Red Planet.
Take a look back at the incredible career of astronaut Sally Ride, who died Monday at age 61.
On the 50th anniversary of the first live transatlantic television feed beamed by Telstar, revisit the historic broadcast of July 23, 1962.
On the anniversary of Skylab’s plunge to Earth on July 11, 1979, discover how the world celebrated, feared and commercialized the spectacular event.
As new research casts doubt on a leading theory about how the moon came into being, explore various lunar formation models.
The solar storm that hit Earth last Thursday delivered only a glancing blow, but in 1859 the planet wasn’t so lucky.
On the 50th anniversary of this historic space flight, here are some facts you might not know about the first American to orbit the Earth.
Find out about the Apollo 1 disaster and how the American space program rebounded from the tragedy to put a human on the moon.
On November 14, 1971, NASA’s Mariner 9 reached Mars, becoming the first spacecraft to orbit another planet.
Edwin Hubble didn’t censor proof that Georges Lemaître beat him to an astronomical breakthrough, evidence suggests.