At 78 degrees north latitude, which is about 12 degrees farther north than the lower boundary of the Arctic Circle, Svalbard ...

In a war with an adversary like China, the ability of US soldiers to operate at night could be key. But it's a "perishable skill," a commander said.

The solar maximum, part of the Sun's 11-year natural cycle, is characterised by heightened magnetic activity, which can ...

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