There's something strange going on in Neptune's atmosphere – the planet is cooling down much more than it ought to be during Neptune's southern summer.
. The rapid warming could simply be due to weather – similar heating was observed on Saturn during the formation of a huge storm over its north pole – but the long-term cooling is probably more complicated than that, says Roman.cycle of solar activity
, which may affect the chemistry in the planet’s atmosphere, or it could be some seasonal process that we don’t fully understand. Thanks to the length of Neptunian seasons, it might be a while before we can figure out what has caused these strange changes in its climate. “We have about 17 years of images that amount to roughly 100 high-quality pictures of Neptune, and this is all that currently exists – it’s less than half a single season,” says Roman. “We need decades more observations to really nail this down.”
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