Crusaders from the Fourth Crusade broke through Constantinople’s walls and entered the great city.
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The first Space Shuttle mission was launched.
Cardinal Bellarmine condemned Galileo for stating that the earth revolved around the sun.
The 'Twentieth Century Dinosaurs' exhibit opened at the Smithsonian Institution Museum of Natural History.
The Zimbabwean dollar was suspended indefinitely.
Project Starshot was announced by Yuri Milner, Stephen Hawking, and Mark Zuckerberg.
