There's a fair amount of water in the Solar System.
Several moons and planets are loaded with it, while comets from the far reaches are packed with the stuff. Where it warms in the heat of the Sun, it sublimates into a gas that drifts into the vacuum of space.
"Since the discovery of main-belt comets, we have collected a substantial body of evidence that their activity is produced by sublimation, but until now, it has all been indirect,""This new result from JWST represents the first direct evidence of sublimation in the form of water outgassing – or outgassing of any kind – from a main-belt comet, following studies dating back to 2008 to detect outgassing in main-belt comets using some of the biggest ground-based telescopes in the...
Although Comet Read's orbit is entirely within the asteroid belt, that's still a relatively broad swath of the Solar System to move around, and the object still has a perihelion. During this part of its orbit, a team led by astronomer Michael Kelley of the University of Maryland used JWST to study it closely for signs of outgassing.
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