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Strange glowing 'bow-and-arrow' structure may be a giant cosmic shock wave created by a supersonic galaxy collision

Reversing the arrow of time in heat transfer: A novel operator learning framework for thermal retrodiction - EurekAlert!

European Homo sapiens May Have Been Hunting with Bow and Arrow Earlier than Previously Believed

Check Out NASA's New Image of the Brilliant Bullseye Galaxy, the Aftermath of a Rare Cosmic Collision | After a blue dwarf galaxy shot through it like an arrow, the large Bullseye now has nine rings—six more than any other galaxy known to scientists

Quantum 'arrow of time' suggests early universe had no entanglement

Archaeologists in Norway found an arrow that was likely trapped in ice for 4,000 years