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Europe has quietly completed another step in securing long-term access to satellite navigation by inserting two fresh spacecraft into orbit in mid-December. The launch, carried out using an Ariane 6 ...

Discover NASA's findings of ammonia compounds on Europa's surface through advanced analysis of Galileo spacecraft data.

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Jupiter's ice-covered moon Europa appears to have life-friendly molecules on its surface. Al Emran, a researcher with NASA's Jet Propulsion Laboratory, spotted ammonia on the surface of Europa while ...