It's not a huge breakthrough, at all lol
It's quite obvious there's no intelligent life forms on Mars, unless they live deep inside the planet, and if that's the case we'll never know. We've had numerous rovers on Mars over the course of 20+ years. Dropped billions of dollars, and finally after all that we found some water? Who cares.
The Curiosity rover has been going for 4 years and at this point the only conclusion they've made is "it's possible there were life forms here millions of years ago on ancient Mars".
Wow, awesome, there could have maybe might possibly been something living there millions of years ago, that's helpful, let's spend billions of dollars more. lol
When the entire goal of this shit is to see if something might have lived there millions of years ago, I have to ask what's the point?
