Beneath a starry night sky in Anvik, Alaska, a dazzling aurora borealis stretched over the horizon in ribbons of green and ...
But hints of auroras were first faintly detected in ultraviolet light when the Voyager 2 spacecraft flew past Neptune in 1989 ...
A partial solar eclipse on March 29 will be visible from parts of North America. Here's how to safely view the cosmic event, ...
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