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On Feb. 22, 1966, two Soviet space dogs launched on a mission that would set a new record for the longest spaceflight.

"Every centimeter of sea level rise exposes another 2 million people to annual flooding somewhere on our planet."

Follow Space.com's rocket launch blog for the latest on when the next rocket launch will be and how to follow it live.

To construct a warp drive, we would need negative mass, which doesn't appear to exist in the universe and would violate everything we know about motion, momentum and energy.

Astronomers have discovered that sulfur may be a key to helping us narrow down our search for life on other planets.

Space.com's image of the day rounds up the most awe-inspiring space photos right here, with a new image everyday.

Do top quarks, nature's heaviest elementary particle, obey Einstein's rules at all times of day and night? Scientists at the Large Hadron Collider have the answer.

Blue Origin is targeting next Tuesday (Feb. 25) for its 10th space tourism launch, which will send six people to the final frontier. You'll be able to watch the action live.

European Space Agency astronaut John McFall is cleared to be the first person with a physical disability to fly to the space station.

The idea that life on Earth arose through a series of improbable "hard" evolutionary steps may be misjudged, according to a new paper that says our Earth had a big say in matters.