23 outubro 2019

New Piranha-Like Fish Found Entombed With Its Victims

A fossil of an unusual piranha-like fish from the Late Jurassic period has been unearthed by scientists in southern Germany. It belonged to an extinct order of bony fish, and had serrated sharp teeth, perfect for tearing bites off its prey. That’s very unusual since most species in its order were shellfish eaters with flat, crushing teeth.

Even more amazing – some of the fossil’s victims were in the limestone with it! Fish with chunks missing from their fins were found nearby, confirming that the new find was indeed a flesh-eating bony fish, the first one on record.

The fossil has been named Piranhamesodon pinnatomus. The genus name is “Piranha” (you can guess why) plus “mesodon,"a common suffix for bony fish of this order, and the species name is Latin for "fin-cutter.”

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NASA Attaches First of 4 RS-25 Engines to Artemis I Rocket Stage


Engineers and technicians at NASA’s Michoud Assembly Facility in New Orleans have structurally mated the first of four RS-25 engines to the core stage for NASA’s Space Launch System (SLS) rocket that will help power the first Artemis mission to the Moon.

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