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Russia casts star for movie shot in space as it races to beat Tom Cruise, NASA
CDC officials made a breakthrough decision on masks. This is what convinced them.
'We need to know': Covid vaccine trial launched for people with immune disorders
Covid deaths in U.S. hit lowest level in 10 months
NASA spacecraft detects a constant 'hum' deep in the cosmos
NASA's James Webb Telescope undergoes final tests ahead of October launch
Shrunken head artifact used as prop in John Huston film revealed to be human
Ceremonial shrunken head returning to the Amazon after being displayed in U.S.
China defends handling of rocket that fell to Earth
String of satellites baffles residents, bugs astronomers
A giant sequoia in California is still smoldering from last year's wildfires
Changing global and political landscapes have made the kind of broad and bipartisan agreements reached in the 1970s seem impossible.