In astronomy, an occultation is when a celestial body or object — like the moon or a planet — passes in front of a distant celestial body or object — such as a star or other solar system body — and ...
Harvard astrophysicist Avi Loeb has published a provocative essay posing a question that sounds ripped from science fiction: ...
What is “down” in the vastness of space? Scientists reveal how gravity, cosmic planes, and perspective redefine direction, ...
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