While imperceptible to humans, these tiny delays are significant for experiments that rely on pulsars as ultra-precise cosmic ...
NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts ...
Morning Overview on MSNOpinion
NASA halts alien biosignature probe as troubling evidence races ahead
The United States is stepping back from the most direct test yet of possible alien biology on Mars just as new telescopes and ...
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