Infrared image of Kilaeau Volcano, Hawaii
Credit:: AVO

Gravitational interactions cause some strange effects in Saturn's rings, including "braiding".
Credit: NASA

GOES Band 4 image of the ash plume from the April 19, 1999 eruption of Shishaldin Volcano, Alaska
Credit: AVO

An anaglyph of the Yucatan Peninsula, site of the Chicxulub impact structure, from Shuttle Radar Topography. The faint curve left of center is the surface expression
of the crater.
Credit: JPL

The strong resemblance of this image to broken, floating sea-ice is a strong indicator that Europa has had a sub-surface ocean. High-resolution insets provide even more detail.
Credit: NASA

Active volcanism on Io, imaged by the Galileo spacecraft three months apart.
Credit: NASA

Composite AVHRR image of the ash cloud from the 1992 eruption of Mt. Spurr, Alaska
Credit: AVO

Streamlined "islands" on Mars, indicative vast fluid flows.
Credit: NASA/JPL

A view of Jupiter with Io never seen from Earth, by The Cassini spacecraft, on its way to Saturn.
Credit: NASA/JPL/University of Arizona

Carbon dioxide frost on Mars ata Viking mission landing site.
Credit: NASA/JPL

A panorama of Mars taken by the Mars Pathfinder lander.
Credit: NASA/JPL

Saturn in various orientations as viewed from Earth by the Hubble Space Telescope.
Credit: NASA/Hubble Heritage Team

Martian sunset taken by Mars Pathfinder.
Credit: NASA/JPL

A larger frame from previous image.
Credit: NASA/JPL

Saturn's Titan is the only moon known to have a substantial atmosphere, so it is one of the primary targets of the Cassini mission due to arrive in July 2004.
Credit: NASA