Quote:
Originally Posted by Dominic
If there's water, there must be life, right?
That's true on Earth. Every where we find water, there's life (pretty much). Not necessarily true on Mars, since we don't know how life starts.
However, if there is life in the water on Mars, it leaves two pretty interesting scenarios.
One: it's the same as life on earth. Meaning the DNA etc looks the same. Then we can conclude that we come from the same place. Either Earth, Mars or somewhere else, like an asteroid for example. (Or from aliens!)
The other scenario is if the (hypothetical) life on Mars is different from life on Earth, then we've found life on two out of two planets with water. That would mean it looks like life gets going relatively easy and the universe should be abundant with life.
Pretty exciting!