When a faint green smudge appeared in images from a backyard telescope in Aguadilla, Puerto Rico, on Nov. 22, 2025, astronomers did not expect it to upend basic assumptions about how comets work. Yet ...

In almost 30 years of writing for trucking publications such compliments are almost as rare as sightings of Halley’s Comet, reckons Spy.

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An interstellar comet has shattered speed records as it hurtled through our solar system, captivating astronomers and ...