Suggested Searches

Jupiter with its moon Ganymede's shadow forming the dark pupil of an eye with the great red spot as the iris. Only part of Jupiter is visible in this image, which is in grayscale.

Jupiter’s Great Red Spot and Ganymede's Shadow

The Hubble Space Telescope treats astronomers to gorgeous close-up views of the eerie outer planets. But it's a bit of a trick when it seems like the planet's looking back at you! In this view, the shadow of the Jovian moon Ganymede swept across the center of the Great Red Spot — a giant storm on the planet. This gave Jupiter the uncanny appearance of having a pupil in the center of a 10,000-mile-diameter "eye."

Image Credit: NASA, ESA, and A. Simon (Goddard Space Flight Center); Acknowledgment: C. Go and the Hubble Heritage Team (STScI/AURA)
Download