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- One hemisphere of Iapetus is covered with very reflective material while the other hemisphere is covered with some of the darkest material in the solar system. The leading hemisphere of Iapetus (the side that faces the direction of rotation) is very dark, reflecting only about 4 percent of the sunlight that falls on it.
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Oct 5, 2021 · Enceladus. Tethys. Dione. Rhea. Titan. Hyperion. Iapetus. Of these eight moons, Iapetus is not only the outermost one, but also possesses three specific features that make it unique. The...
- Ethan Siegel
The September 2007 Cassini flyby of Iapetus showed that a third process, thermal segregation, is probably the most responsible for Iapetus' dark hemisphere. Iapetus has a very slow rotation, longer than 79 days.
Dec 17, 2004 · NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery. One hemisphere of Iapetus is covered with very reflective material while the other hemisphere is covered with some of the darkest material in the solar system.
Iapetus has a bright and a dark hemisphere, with a ridge running along its equator. The dark region is called Cassini Regio and is the principal feature of the leading hemisphere. The surface of Iapetus is heavily cratered, with large impact basins up to 580 kilometres across. Surface darkening on Iapetus comes from organic materials left ...
Dec 10, 2009 · Abstract. Since 2004, Saturn’s moon Iapetus has been observed repeatedly with the Imaging Science Subsystem of the Cassini spacecraft. The images show numerous impact craters down to the resolution limit of ~10 meters per pixel. Small, bright craters within the dark hemisphere indicate a dark blanket thickness on the order of meters or less.
- Tilmann Denk, Gerhard Neukum, Thomas Roatsch, Carolyn C. Porco, Joseph A. Burns, Götz G. Galuba, Nic...
- 2010
Iapetus, outermost of Saturn’s major regular moons, extraordinary because of its great contrast in surface brightness. It was discovered by the Italian-born French astronomer Gian Domenico Cassini in 1671 and named for one of the Titans of Greek mythology. Iapetus has a radius of 718 km (446 miles)
Oct 8, 2007 · The distribution of this material and variations in the color of the bright material across the trailing hemisphere will be crucial clues to understanding the origin of Iapetus' peculiar bright-dark dual personality.
