This artist’s impression shows the cigar-shaped interpretation of ‘Oumuamua. Although it was initially suspected to be rocky in nature, the lack of observed outgassing combined with its anomalous acceleration instead suggests that it may be made of nitrogen ice. That remains the leading hypothesis, even after a recent analysis (faultily) suggested otherwise. (Credit: ESO/M. Kornmesser; nagualdesign)

‘Oumuamua wasn’t an alien spacecraft, and ignoring the science can’t make it so

The most unique interloper into our Solar System has a natural explanation that fits perfectly. To invoke the supernatural is antithetical to science.

In 2017, scientists discovered an object in our Solar System that was unlike…




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Ethan Siegel

Ethan Siegel

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.

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