space.com
space.com
science.nasa.gov
Science Mission Directorate
https://science.nasa.gov › resource › solar-system-temperatures
universetoday.com
britannica.com
planetary.org
The Planetary Society
https://www.planetary.org › worlds › neptune
nssdc.gsfc.nasa.gov
solarsystem.nasa.gov
NASA Solar System Exploration
https://solarsystem.nasa.gov › planets › neptune › in-depth.amp
science.nasa.gov
reference.com
planetfacts.org
Planet Facts
https://planetfacts.org › temperature-on-neptune
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