What if bacteria from Earth invade Mars?
This can well be an interesting plot to make a sci-fi movie. As the scientific community gears up for a manned mission to Mars, there are apprehensions about invaders to the red planet – in the form of micro-organisms from the Earth!
Astronomers fear that organisms on an exploring spacecraft or a landing vehicle have the potential to contaminate Mars.
This would make it difficult for scientists to determine whether a life form existed on another planet or was introduced there by explorers.