Cheetahs are the undisputed speed champions on Earth, but what if they had to run in space? Without gravity and friction, would they still be the fastest or would their legendary sprinting skills ...

A NASA satellite has spotted bizarre wave-like patterns on Mars that look eerily like paint dripping down a wall.

Would a cheetah still be the fastest creature if it ran in space? Scientists are imagining how this Earth-born speedster might perform without gravity, on other planets, or even in space stations.

This year marks the 50th anniversary of the founding of the European Space Agency (Esa). It has launched spectacularly ...

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China's discovery of Niallia tiangongensis, an evolving bacteria aboard the Tiangong space station, raises alarming concerns ...

This year marks the 50th anniversary of the founding of the European Space Agency (Esa) . It has launched spectacularly successful missions, but is ...

Space Shuttle Endeavour is scheduled to rise off Pad 39B at Kennedy Space Center Wednesday, carrying a load that cannot be weighed with conventional scales. When the seven astronauts ride the ...

In April, astronomers said they had detected a possible signature of life on the exoplanet K2-18b. Now, three independent ...

Andy Weir's bestselling story "The Martian" predicts that by 2035 NASA will have landed humans on Mars three times, perfected return-to-Earth flight systems and collaborated with the China National ...

Can Mars become a second Earth? Explore the science, challenges, and future of terraforming Mars for human colonization.