Massive comet zooming through solar system could be alien technology, Harvard astrophysicist says

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...

New comet from another star system has unheard-of chemistry

A newly discovered interstellar comet is puzzling astronomers as it speeds through our solar system with a chemical profile unlike anything seen before. Officially named 3I/ATLAS, it's only the third ...

3I/ATLAS, comet hurtling toward solar system, much bigger than previously thought, astronomers say

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously thought, astronomers say.
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Newly Discovered Comet Will Be Visible Over Wyoming Through October

Comet SWAN isn't the biggest or brightest comet that can be seen from Earth, but it could be the last one until Halley's ...
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"Major Anomaly" As Interstellar Object 3I/Atlas Measured To Be Over 33 Billion Tons

A new study has attempted to pin down the properties of interstellar comet 3I/Atlas, finding it is "anomalously massive" at around 33 billion tons.

This interstellar comet could be one of the oldest objects in the entire galaxy

But over the summer, 3I/ATLAS, has plunged toward the inner solar system—and the fireworks show has begun in earnest. When ...