New Hubble Space Telescope imagery of the Saturn show it's 'ring spokes' in orbit around the gas giant planet. Credit: ...

A rare 'smiley face' triple conjunction is coming to Earth's morning skies on April 25, when Venus, Saturn and the crescent moon form a celestial smirk near the horizon.

New research finds that despite large rivers and seas of liquid methane, Saturn’s moon Titan seems mostly devoid of river deltas, raising new questions about the surface dynamics on this alien world.