Leonard is the brightest comet all year. Here's how to see it
The comet was discovered less than a year ago near the orbit of Jupiter. Now, observers in North America can see it in the northeastern sky around sunrise.
comets
Mars Probes Give Scientists Box Seats For Rare Comet Flyby
A "mountain-sized" comet known as Siding Spring will pass very close to the red planet, where orbiters from the U.S., Europe and India, hope to get close — but not too close — to the action.