Juno spacecraft finds water on Jupiter

[lpetrich]

Findings From NASA's Juno Update Jupiter Water Mystery | NASA

NASA's Juno mission has provided its first science results on the amount of water in Jupiter's atmosphere. Published recently in the journal Nature Astronomy, the Juno results estimate that at the equator, water makes up about 0.25% of the molecules in Jupiter's atmosphere — almost three times that of the Sun. These are also the first findings on the gas giant's abundance of water since the agency's 1995 Galileo mission suggested Jupiter might be extremely dry compared to the Sun (the comparison is based not on liquid water but on the presence of its components, oxygen and hydrogen, present in the Sun).

Jupiter is likely the first planet to have formed, and how much water it has is something that offers a clue as to how it formed.

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The Juno spacecraft is still active.