Io is the most volcanically active moon in our solar system. There are more than 400 operating
Previously, scientists received images of a satellite in the directby the sun's rays, as well as at the moments of its passage in the shadow of Jupiter. To distinguish between the various processes causing Io's atmosphere, a team of astronomers used ALMA to take pictures of the moon as it entered and exited Jupiter's shadow.
Thanks to the resolution and sensitivity of ALMAthe researchers were able to examine plumes of sulfur dioxide (SO2) and sulfur monoxide (SO). Based on the imagery, they estimate that active volcanoes produce about 30-50% of Io's atmosphere.
In the composition of some loops, neitherSO, no SO2: These are composed mainly of potassium chloride. According to the researchers, this suggests that the different volcanoes of Io are powered by magma reservoirs of different composition.
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