Astronomers using the Keck Observatory have discovered a new storm on the planet Neptune and released images of the storm – labeled “cloud complex” in the above image. As usual, click the image for a larger version.
The storm in a region where no bright cloud was ever seen and this is a large complex, about 9000 km / 5600 mi across or about a third the size of the planet and about 75 percent the size of the Earth.
Here’s the story from Keck (N. MOLTER/I. DE PATER, UC BERKELEY/C. ALVAREZ, W. M. KECK OBSERVATORY):
Maunakea, Hawaii – Striking images of a storm system nearly the size of Earth have astronomers doing a double-take after pinpointing its location near Neptune’s equator, a region where no bright cloud has ever been seen before.
“Seeing a storm this bright at such a low latitude is extremely surprising,” said Ned Molter, a graduate student at University of California, Berkeley, who spotted the storm complex during a test run of twilight observing at W. M. Keck Observatory on Maunakea, Hawaii. “Normally, this area is really quiet and we only see bright clouds in the mid-latitude bands, so to have such an enormous cloud sitting right at the equator is spectacular.”
This massive storm system is about 9,000 kilometers in length, or 1/3 the size of Neptune’s radius, spanning at least 30 degrees in both latitude and longitude. Molter observed it getting much brighter between June 26 and July 2.