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Mysterious, fascinating, and utterly mesmerising, here we take a look at some of the most inspiring images of stars ...
This isotope is found at a ratio of about one per 2,500 helium-4 ions, the latter being the common version of helium.
Parts of the northeastern U.S. and Europe witnessed a partial solar eclipse on Saturday. Here's some photos of what they saw.
The images show the bright light of the sun beginning to disappear beneath the moon's rocky horizon. MORE: How global warming could threaten satellites, according to new study The Blue Ghost ...