The precise chemical composition of the Sun, particularly the abundance of heavy elements like oxygen, carbon, nitrogen, and neon relative to hydrogen, remains a significant point of contention in ...
Approximate true color image of comet 67P taken by the Rosetta spacecraft's OSIRIS Narrow Angle Camera on March 17, 2015. This image is a four frame mosaic, with each color frame imaged through ...
As astronomers gaze into the depths of space, they do so with unease: They don’t know precisely what the universe is made of. It’s not just the true nature of dark matter that eludes them; so does the ...
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