There was life on Mars – and perhaps there is still life on Mars.
NASA images, though intensely manipulated, show tons of artefacts and evidence of a lost civilization similar to ours. This channel and the connected YouTube Site ‘Life on Mars’ discuss official NASA images to show these evidence.
This detail of official NASA image PIA20843 is a good example. I guess everyone will agree that the object on the left side is artificial and the object above likely a hatch or a door: you can see the door handle and a knob. NASA claims it’s a rock…
Link to the official NASA-image
If you compare images from Mars with photos from Hiroshima or Nagasaki after dropping the nuclear bomb you will see that the scenes are all alike. Though everything is destroyed you can still identify some objetcs. Even bigger objects like cars “survived” the bomb.
There is the convincing hypothesis of a nuclear war on Mars because of some measurements of the radiation. You must agree that it’s very plausible to find such artificial objects on Mars, too