Thanks once again to Ned Nikolov, who has drawn attention to this press release from the Hubble Space Telescope website. It seems that real astrophysicists don’t have a problem proposing that a rise in the surface temperature of a celestial body can be brought about by an increase in the atmospheric mass of an inert gas… Or at least that that was the case back in 1998, when this press release dates from. You can easily spot the GHG caveat intro sections that doesn’t sit consistently with the rest of the piece.
hubblesite.org News Release Number: STScI-1998-23
Hubble Space Telescope Helps Find Evidence that Neptune’s Largest Moon Is Warming Up

Sub Neptunian Hemisphere of Triton
Observations obtained by NASA’s Hubble Space Telescope and ground-based instruments reveal that Neptune’s largest moon, Triton, seems to have heated up significantly since the Voyager spacecraft visited it in 1989.
“Since 1989, at least, Triton has been undergoing a period of global warming – percentage-wise, it’s a very large increase,” said James L. Elliot, an astronomer at the Massachusetts Institute of Technology (MIT), Cambridge, MA. The warming trend is causing part of Triton’s frozen nitrogen surface to turn into gas, thus making its thin atmosphere denser. Dr. Elliot and his colleagues from MIT, Lowell Observatory, and Williams College published their findings in the June 25 issue of the journal Nature.
Even with the warming, no one is likely to plan a summer vacation on Triton, which is a bit smaller than Earth’s moon. The five percent increase means that Triton’s temperature has risen from about 37 degrees on the absolute (Kelvin) temperature scale (-392 degrees Fahrenheit) to about 39 Kelvin (-389 degrees Fahrenheit). If Earth experienced a similar change in global temperature over a comparable period, it could lead to significant climatic changes.
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