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Artificial intelligence trained by asteroid-hunting citizen scientists helped identify more than 1,000 never-before-seen solar system objects from old Hubble images spanning two decades.
Scientists have yet to reach the bottom of the Taam Ja' Blue Hole in Mexico's Chetumal Bay, which new measurements hint could be connected to a labyrinth of submarine caves and tunnels.
Supermassive black holes may create conditions akin to "cosmic intersections with failed traffic lights" that make collisions between smaller stellar-mass black holes inevitable.
Ultraviolet has very short and energetic wavelengths that are shorter than violet on the visible spectrum. But can people see UV?
The world's oldest known wild bird, Wisdom, a Laysan albatross, courted new suitors recently at the Midway Atoll National Wildlife Refuge in the North Pacific Ocean.