The fact that Mars was a planet eerily similar to Earth is no surprise any longer.
But just how similar was it to our homeworld? Did the red planet once have oceans, lakes, and rivers? Did it have vegetation? And is it possible that life once existed in the now, barren and dry alien world?
Image Credit: ESA/ DLR / FU Berlin.
Imagine asking these questions some 30 years ago. Astronomers would have immediately said… Seguir leyendo