Astronomy Picture of the Day 08-30-04

Explanation: A comet discovered last year has brightened unexpectedly and now may become visible to the unaided eye within the next month. Designated Comet C/2003 K4 (LINEAR), the comet was discovered in 2003 May by project LINEAR. Many reports already place the comet as brighter than magnitude 7, meaning that it can now be seen with binoculars. Reports also indicate the comet already has a visible tail nearly the length of a full Moon. Since predicting the future brightness of comets is a very tricky business, there remains the possibility that K4 might never become very bright. Current predictions, however, estimate the comet may approach fifth magnitude in October. K4 passes closest to the Sun on October 12 and then closest to the Earth on December 23. Comet K4 was photographed above from Van Buren, Arkansas, USA on August 17.

South polar storms on Saturn spotted by Cassini
CASSINI PHOTO RELEASE
Posted: August 27, 2004

This Cassini spacecraft narrow angle camera view of Saturn's southern polar region features a bright white spot, or storm, surrounded by faint, darker swirls of clouds.

Credit: NASA/JPL/University of Arizona

The image was taken from a distance of 6.7 million kilometers (4.2 million miles) from Saturn, through a filter sensitive to wavelengths of infrared light. The image scale is 39 kilometers (24 miles) per pixel. Contrast was slightly enhanced to bring out features in the atmosphere.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras, were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.

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