Early 2026 has produced two rare astronomical anomalies: an unprecedented spike in bright fireball detections and an interstellar comet with a mysterious sunward protrusion. NASA, ESA, and other ...

A comet from another star system is doing something astronomers did not expect. As interstellar comet 3I/ATLAS swept through ...

In order to move, cells must be able to rapidly change shape. A team of researchers from the University of North Carolina at Chapel Hill show that cells achieve this by storing extra “skin” in folds ...

Protrusion of plaque into the stent lumen during carotid artery stenting (CAS), though an infrequent complication, illustrates the need for careful periprocedural management and follow-up as well as ...

Extracellular vesicles (EVs) are tiny membrane-bound particles released by cells to transport proteins and other molecules to neighboring cells. Because of this natural delivery ability, EVs have ...

I have talked about liner protrusion many times since I started writing. But most owner-operators who get their engines built by other shops never ask where the mechanic set the liner protrusion.