Click on pictures for larger image
Definitely weird things are happening on Mars. Take a look at the above pic snapped by the rover on Mars. In the upper left you will see a glint of light. Click on the pic to expand it, and you will see the glint (in a better light -- ha!).
I blew up the glint in the lower photo. NASA says that it is probably light glinting off a rock or a cosmic ray. First of all, there are two arguments against light glinting off a rock. First, it is dusk. If there were any rocks that could make light glint of them, we would see more glints. Secondly, the area is in a shadow.
As for the cosmic ray, the theory is that a cosmic ray hits a particle, disintegrates it, and a flash of light is given off. This is how they capture neutrinos. However, they have to do that in a deep mine in total darkness, just to get a faint glimmer. There isn't enough energy to get a big flash. Here we have enough ambient light to take a photograph, and we get a huge burst of light. I doubt that it is a cosmic ray.
So what is it? Is it aliens? Is it a fake photograph and an inadvertent flash from the Hollywood set is making the light? Is it another Mars rover from another galaxy? Who knows? What I do know is that I am not not buying the official story.