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First Untethered Spacewalk

After decades of tethered spacewalks it was time to push the bar even further. On February 7, 1984, Bruce McCandless and Robert Stewart became the first astronauts to “walk” in space without restraints. Strapped to jet packs, they gave the term “spacewalk” new meaning.

The Great Seal Bug: A Story of Cold War Espionage

It was 1945 and the U.S. and the Soviet Union had at best a tenuous relationship. What was presented ... more

Hubble Repaired

Servicing this camera is no easy feat. When the Hubble telescope was delivering sub-par imagery ... more

Retrospectacle: The Smiley Face

The smiley face is everywhere, but where did it come from? Learn about the origin of this ubiquitous ... more
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