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Hubble captured four of Saturn's largest moons passing in front of the planet at the same time. Titan is the orange moon casting the northern most shadow. Near the ring plane is Mimas. Farther to the left are the bright moon Dione and the fainter moon Enceladus.
Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
A solar eclipse is rare on Earth, but this photo shows three occurring at the same time on Jupiter. In this Hubble image, three of Jupiter's 16 confirmed moons cast shadows that create black spots. From left to right, they are cast by Ganymede, Io and Callisto. Two of the moons are also visible in this image. Io is the white spot toward the center of the planet; Ganymede is the blue spot in the upper right. Callisto is outside the frame.
Images from the Hubble Space Telescope confirm the appearance of a third giant red spot on Jupiter (the smaller spot to the left). The new feature was recently seen as a white storm raging near the other two red spots, but astronomers believe that it grew so large that it dredged up material beneath the planet's cloud cover, causing it to turn red.
The Great Red Spot is a storm that's wider than two Earths and has been spotted on Jupiter for at least 168 years and most likely longer. Red Spot Jr. turned red in early 2006.