science

In the early days of telescopes, astronomers thought that they saw “canals” on Mars and thus presumed it a water planet. By the time that we could see our own water planet from space, make spectographic analyses of the Martian atmosphere from afar and view Mars from more sophisticated optical devices, we knew that wasn’t true.

But then when spacecraft began taking closer-up pictures of Mars like the above NASA photo of the Red Planet’s Newton Basin, the geological formations clearly appeared as if they had been carved out by flowing water.

Now that suggestion has been confirmed by soil core samples taken and analyzed by NASA’s Mars rovers. They found a salt layer that can only be reasonably explained as the dessicated remnant of what used to be a body of saltwater.

So far the Mars rovers haven’t found any living organisms on Mars, nor have they found fossils, complex hydrocarbons or other compelling evidence that there once was life on that planet.


Photo courtesy of NASA


Also in this section:
Martian marine past
The trees of a unique Borneo park
WHO targets traffic accidents
The Panama Canal's advancing technology

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