Neptune is an outer planet, the planet from the sun, and is the fourth largest planet in our solar system. First, it is classified as ice. The atmosphere is composed of hydrogen, helium, and methane. It absorbs red light in the atmosphere, giving it its blue color. Neptune is one of the four planets with a ring, though it is difficult to see. There are 14 known moons.
Neptune has a cold atmosphere with temperatures around -214 degrees Celsius. The planet also has extreme winds that speed up to 1,305 miles per hour.
Neptune does not have a surface like Earth. Its atmosphere is gaseous and has varying cloud bands at different altitudes.
Due to Neptune's frigid, high-pressure environment, it is unlikely to support life.
Neptune's discovery by Urbain Le Verrier and Johann Galle (using mathematical predictions). Also, William Lassell discovers Triton, Neptune's largest moon.
Discovery of Neptune's ring system.
Voyager 2's flyby, revealing Neptune's atmosphere and discovering six new moons.
Continued observation and data collection by Hubble and ground-based telescopes (like Keck).
Discovery of four more moons.
Deterioration of some of Neptune's ring arcs is observed.
Discovery of a new dark spot on Neptune using the Hubble Space Telescope.
The James Webb Space Telescope captures its first image of Neptune and its rings.