Don’t peek at the answer until you’ve given this a good try! Then, scroll down a bit and the truth will be revealed to you.

NASA/JPL

What in the world is it?

Yes, it’s an image of Mars taken from space, but what’s so special about it? Well, this image shows the Mars Exploration Rover Opportunity near the rim of Victoria Crater. — an impact crater about 800 meters (half a mile) in diameter. Opportunity has been operating on Mars since January, 2004. Opportunity arrived at the rim of Victoria five days before this image was taken — after a drive of more than 9 kilometers (over 5 miles). It then drove to the position where it is seen in this image.

When viewed at the highest resolution, this image shows the rover itself, wheel tracks in the soil behind it, and the rover’s shadow, including the shadow of the camera mast.

What’s amazing is that the range to the target site was 297 kilometers (185.6 miles). At this distance the image scale is 29.7 centimeters (12 inches) per pixel so objects about 89 centimeters (35 inches) across are resolved.