50 years ago, the dinosaurs’ demise was still a mystery

Neil Armstrong became the first person to walk on the Moon during Apollo 11 exactly 53 years ago today. A year later, Armstrong was still required to give an oral thesis defense for his master’s in aeronautical engineering at USC. He passed.

JWST has found the oldest galaxy we have ever seen in the universe

Celebrate 50 years of Landsat with these stunning images (gallery)