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Thanks, I had not seen that image before. It's amazing that Pluto has an atmosphere. Was this suspected before the New Horizon's mission? I seem to recall it on

Thanks, I had not seen that image before. It's amazing that Pluto has an atmosphere. Was this suspected before the New Horizon's mission? I seem to recall it once being presented as considered a cold rock with no interesting features or possible atmosphere.

yaks_hairbrush 7y ago
It was indeed established that Pluto had an atmosphere before the New Horizon flyby. The atmosphere is mostly seasonal. The air freezes when Pluto is far from the sun, and sublimates again when it's near.
- lmkg 7y ago
  Thank you for reminding me how strange the universe can be sometimes.