Neptune Planet Image - Voyager 2’s Historic 1989 Flyby Capture #188004 (License: Personal Use)

This historic image, taken by NASA’s Voyager 2 spacecraft during its August 1989 flyby, reveals Neptune’s striking azure coloration due to methane absorption and high-altitude haze. The prominent dark oval feature is the Great Dark Spot-a massive anticyclonic storm system comparable in size to Earth, observed only during this encounter and later found to have dissipated. Thin, bright cirrus-like clouds streak across the planet’s limb, indicating supersonic winds exceeding 2,000 km/h.

Used on astronomy, space exploration, and planetary science web pages-especially in articles about Voyager missions, outer planets, or Neptune’s atmospheric dynamics. Matches user intent for educational, historical, or visual reference content about solar system exploration.