en.wikipedia.org
en.wikipedia.org
science.nasa.gov
Science Mission Directorate
https://science.nasa.gov › neptune
Neptune has a thick, windy atmosphere. Time on Neptune. One day on Neptune goes by in 16 hours. Neptune has such a long journey around the Sun it takes 165 Earth years to go around once. That's a long year! Neptune's Neighbors. Neptune has 16 moons. Neptune is the eighth and most distant planet from the Sun.
solarsystem.nasa.gov
NASA Solar System Exploration
https://solarsystem.nasa.gov › planets › neptune › in-depth.amp
britannica.com
spaceplace.nasa.gov
NASA Space Place
https://spaceplace.nasa.gov › all-about-neptune › en
solarsystem.nasa.gov
NASA Solar System Exploration
https://solarsystem.nasa.gov › module › 94
nineplanets.org
The Nine Planets
https://nineplanets.org › neptune
nationalgeographic.com
National Geographic
https://www.nationalgeographic.com › science › article › neptune
space.com
airandspace.si.edu
National Air and Space Museum
https://airandspace.si.edu › explore › stories › neptune
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