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WASHINGTON Astronomers used the powerful James Webb Space Telescope to study Fomalhaut — the first asteroid belt ever seen outside of our solar system in infrared light. Webb’ Mid-Infrared Instrument (MIRI) captured the warm dust around the young star Fomalhaut, and found that the dusty structures are much more complex than the asteroid and Kuiper dust belts of our solar system. Overall, there are three nested belts extending out to 23 billion km from the Fomalhaut; that’s 150 times the distance of Earth from the Sun. The scale of the outermost belt is roughly twice the scale of our solar system’s Kuiper Belt of small bodies and cold dust beyond Neptune. The inner belts — which had never been seen before — were revealed by Webb for the first time. The belts encircle the young hot star, which can be seen with the naked eye as the brightest star in the southern constellation, Piscis Austrinus. The dusty belts are the debris from collisions of larger

Mauna keaUnited statesGeorge riekePiscis austrinusAndras gasparCanadian space agencyUniversity of arizonaJames webb space telescopeMid infrared instrumentKuiper beltHubble space telescopeHerschel space observatoryAtacama largeAstronomical satelliteSpace telescopeNature astronomy