Top news for December 21, 2008

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Jupiter Seems To Have Just Been Smacked By Something Pretty Big

Concrete on Mars Could Literally Be Made Out of Astronaut Blood, Sweat, And Tears

UK scientists make 'cosmic concrete' with astronaut blood and space dust

NASA Selects Five U.S. Companies to Mature Artemis Lander Concepts

On this day in space! Oct. 14, 1947: Chuck Yeager smashes the sound barrier.

SpaceX's Inspiration4 private all-civilian orbital mission: Live updates

Humans to Mars Summit 2021 is underway: Watch it live here.

Why We’re Experiencing So Many Unusually Hot Summer Nights

Research to Examine Whether Vaccines Affect Menstrual Cycles

Most People Don't Need a Covid Vaccine Booster, New Review Says