New Webb image captures clearest view of Neptune's rings in decades NASAGoddard
Most striking in Webb's new image is the crisp view of the planet's rings—some of which have not been detected since NASA's Voyager 2 became the first spacecraft to observe Neptune during its flyby in 1989. In addition to several bright, narrow rings, the Webb image clearly shows Neptune's fainter dust bands.
Neptune has fascinated researchers since its discovery in 1846. Located 30 times farther from the sun than Earth, Neptune orbits in the remote, dark region of the outer solar system. At that extreme distance, the sun is so small and faint that high noon on Neptune is similar to a dim twilight on Earth.
More subtly, a thin line of brightness circling the planet's equator could be a visual signature of global atmospheric circulation that powers Neptune's winds and storms. The atmosphere descends and warms at the equator, and thus glows at infrared wavelengths more than the surrounding, cooler gases.
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