The Search for Extraterrestrial Intelligence (SETI) has a low probability of success, but it would have a high impact if successful. Physicists Paul Davies and Robert Wagner of Arizona State University argue that it makes sense to widen the search to scour the Moon for possible alien artifacts. Meanwhile at Penn State, researchers propose the same search for Mars
Full Story here - Maybe some of those youtube videos and the Ancient Aliens TV series about the subject may have a bit of truth to them after all
If so, they must have buried them extremely well and then returned the surface to pristine original, including the mineral compositions and age of the cratering and lava flows?
Anything is possible and the only way we'd ever find out is to go there and look for ourselves.
All the probes in the world won't tell you a thing...in order to really determine the veracity of anything, you need to ground truth what's apparently there. I can tell you from experience, satellite remote sensing doesn't always show you what's there, as a matter of fact it can show things that are actually not there....artifacts of the image processing, basically.
There is already alien artifacts on the moon, All the Apollo craft modules and buggies that were left behind. On Mars there is a buggy bogged in the sand.
After all it is alien to those planets. Maybe a poor microbe is screaming out in pain after the rover ran over its foot
Carl, are you a plain or strawberry marshmallow or perhaps dipped in chocolate?
Max, on what basis are you so sure that we are so alone in the cosmos, or was that tongue in cheek?
