NASA's Mars Reconnaissance Orbiter has photographed the Mars
Exploration Rover Opportunity beside a crater where the rover
will spend the seventh anniversary of its landing. Read More
Mars in a Minute: How Do You Get to Mars? What does it take to
get a spacecraft from Earth all the way to Mars? There are a few
key things to consider, as explained in this 60-second video
from NASA's Jet Propulsion Laboratory. › Watch Video Exposed Ice
in a Fresh Crater At the center of this view of an area of mid-
latitude northern Mars, a fresh crater about 6 meters (20 feet)
in diameter holds an exposure of bright material, blue in this
false-color image. Image Credit: NASA/JPL-Caltech/University of
Arizona