Most objects orbiting the Sun between Mars and Jupiter in the main asteroid belt are, well, asteroids. But there are some comets as well! @NASAWebb has spied water ice vaporizing from one of them – with implications for the origins of Earth's water. https://go.nasa.gov/3Buv3Mu #NASASolarSystem
Using Webb’s NIRSpec (Near-Infrared Spectrograph) instrument, astronomers have confirmed gas – specifically water vapor – around a comet in the main asteroid belt for the first time, indicating that water ice from the primordial solar system can be p…
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in reply to NASA • • •