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This Day in History
Brooklyn Bridge opens, 1883
After 14 years and 27 deaths while being constructed, the Brooklyn Bridge over the East River is opened, connecting the great cities of New York and Brooklyn fo…
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.
NASA telescopes have shed light on how the traces of an exploded star traveled faster and further than expected.
As NASA’s GRAIL satellites embark on their lunar mission, explore some of the theories earthlings have entertained about the moon throughout history.
From Amelia Earhart’s scarf to part of a 16th-century warship, explore historic items that hitched a ride into the final frontier on the space shuttle.
As the countdown to the final space shuttle launch begins, explore some of the program’s most unforgettable moments.
Astronauts evacuated the International Space Station on Tuesday during a close encounter with space debris, part of the swirl of trash circling the planet.
The summer solstice, which falls on June 21 in the northern hemisphere this year, was a day of great significance for many past civilizations.