From Live Science
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DARPA's autonomous 'Manta Ray' drone can glide through ocean depths undetected
Northrop Grumman Corporation has built its Manta Ray uncrewed underwater vehicle, which will operate long-duration missions and carry payloads into the ocean depths in partnership with DARPA.
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Hundreds of black 'spiders' spotted in mysterious 'Inca City' on Mars in new satellite photos
Every spring, creepy black 'spiders' sprout up on Mars as buried carbon dioxide ice releases dusty geysers of gas. New ESA images show the phenomenon has begun in the strange Inca City formation.