This new Hubble Space Telescope image of the planet Uranus shows its rings
and several satellites. It was released yesterday.
The region outside the planet was enhanced in brightness to make things more
visible.
The outermost ring is brighter on the lower side, where it is wider. It is
made of dust and small pebbles, which create a thin, dark, and almost vertical
line across the right side of Uranus, astronomers said.
The bright satellite on the lower right corner is Ariel, which has a snowy
white surface. Five small satellites with dark surfaces can be seen just outside
the rings. Clockwise from the top, they are: Desdemona, Belinda, Portia, Cressida,
and Puck.
Erich Karkoschka of the University of Arizona led the observations and expects
to produce a paper on the results in about a year.
"The science from these images will focus on the vertical structure of the
atmospheres, such as altitudes of cloud layers, thickness of hazes, size and
composition of cloud particles, and how they vary with latitude," Karkoschka
told SPACE.com. "How high are the small features in the atmosphere, how
extended?"
Credit: Hubble/NASA/Erich Karkoschka, University
of Arizona