... Clouds and Sand on the Horizon of Mars . ... In the Shadow of Saturn . ... The robotic Cassini spacecraft now orbiting Saturn recently drifted in giant planet's shadow for about 12 hours and looked back toward the eclipsed Sun. ... An Orion Deep Field . ... This crowded star field towards the center of our Milky Way Galaxy turns out to be a great place to search for planets beyond our solar system. ... In the vast Orion Molecular Cloud complex, several bright blue nebulas are particularly apparent. ...