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-3,280 feet: The deepest freshwater cave in the world, Hranice Abyss in the Czech Republic, was found to extend about 3,280 feet into the ground, according to a study published in the Journal of Geophysical Research. The new figure is more than 2x the previous estimate.
142 solar masses: Astronomers detected the biggest collision yet observed between 2 black holes. Occurring about 7B years ago, the merger created a new black hole that was about 142x the size of the sun — an intermediate size that hadn’t been detected before.
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