June 9, 2023

Telescope images of Neptune’s rare red asteroids taken with taken with the Palomar 200-inch, Gemini and Keck telescopes (Image credit: Dr Bryce Bolin)

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Neptune is famously a vivid blue, but the asteroids orbiting near it are decidedly not.

An international team of astronomers recently took a peek at Neptune‘s Trojan asteroids and found that they all seem to be some shade of red — far redder than most asteroids in the solar system. They published their results on Feb. 14 in the journal Monthly Notices of the Royal Astronomical Society: Letters (opens in new tab).

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