Comet ISON appeared in the higher-resolution HI-1 camera on NASA’s STEREO-A spacecraft.
Dark “clouds” coming from the right are more dense areas in the solar wind, causing ripples in Comet Encke’s tail. Using comet tails as tracers can provide valuable data about solar wind conditions near the sun.
Confused Asteroid Sprouts Tails… Six of Them!
Two Generations of Windblown Sediments on Mars
This colorful scene is situated in the Noctis Labyrinthus region of Mars, perched high on the Tharsis rise in the upper reaches of the Valles Marineris canyon system.