Thursday, July 17, 2008

Three Red Spots Mix it Up on Jupiter

Credit: NASA, ESA, A. Simon-Miller (Goddard Space Flight Center),
N. Chanover (New Mexico State University),
and G. Orton (Jet Propulsion Laboratory)

This sequence of Hubble Space Telescope images offers an unprecedented view of a planetary game of Pac-Man among three red spots clustered together in Jupitear's atmosphere.

The time series shows the passage of the "Red Spot Jr." in a band of clouds below (south) of the Great Red Spot (GRS). "Red Spot Jr." first appeared on Jupiter in early 2006 when a previously white storm turned red.

This is the second time, since turning red, it has skirted past its big brother apparently unscathed.

But this is not the fate of "baby red spot," which is in the same latitudinal band as the GRS. This new red spot first appeared earlier this year.

The baby red spot gets ever closer to the GRS in this picture sequence until it is caught up in the anticyclonic spin of the GRS.

In the final image the baby spot is deformed and pale in color and has been spun to the right (east) of the GRS.

These three natural-color Jupiter images were made from data acquired on May 15, June 28, and July 8, 2008, by the Wide Field Planetary Camera 2 (WFPC2).

Each one covers 58 degrees of Jovian latitude and 70 degrees of longitude (centered on 5 degrees South latitude and 110, 121, and 121 degrees West longitude, respectively).