May 7, 1996
Another birthday means another year in which the universe got to experience itself through your particular combination of wonder and will.
The Clouds of Neptune
Birthday · May 7, 1996
A little universe, just for you
Your date.
Ready to give.
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APOD published May 7, 1996. Full image credits are on the original APOD entry below. A publication-date match, not a photo taken on your date. Independent of NASA.
These Hubble Space Telescope (HST) images reveal glimpses of the dynamic atmosphere of Neptune, the Solar System's most distant gas giant planet. The first close-up of Neptune's clouds was provided by NASA's Voyager 2 spacecraft during its August 1989 flyby, giving a tantalizingly brief look. From its vantage point in Earth orbit, HST can patiently watch in detail as the planet's massive weather systems change over time. These three pictures, taken during October and November 1994 when Neptune was only 2.8 billion miles distant, show the planet's characteristic aqua-blue colored atmosphere highlighted by pink, high altitude clouds and streaked with dark bands. The aqua-blue color is caused by gaseous methane which absorbs red light. Here, the high altitude clouds were intentionally given a pink tint to indicate that they were imaged in near infrared light - in true color images they would appear white.