For as long as we have been able to look logically at the stars, we have wondered if there was life on other planets or anywhere! With Mars being the most logical place for life to exist, so we have looked to Mars as the place to go to meet aliens! So in four hundred years of study, what do we know about the red planet that we call Mars?
Here is the definitive info graphic that explains just that, starting in 1609 when Galileo first studied the planet to 2018 when a proposed mission to Mars will mean samples from the planet being brought back for examination.
Source [Geeks Are Sexy]