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Euclid is an old-fashioned optical telescope, not a microwave detector, which makes it a technically different kind of mission requiring different skills.

The orbit was designed to thread the needle between Jupiter’s cloud tops and radiation belts, which can fry electronics and interfere with the spacecraft’s microwave detector.

In 1965 two American physicists at the Bell Telephone Laboratories in New Jersey, Arno Penzias and Robert Wilson, were testing a very sensitive microwave detector.

Its high-frequency microwave detector is cooled to just 0.1 degrees above absolute zero.

At the same time, Juno’s microwave detector will peer about 300 miles beneath the top of Jupiter’s colorful surface, mapping the planet’s deep clouds while searching for water and, by proxy, oxygen.