How many planets has the Hubble been able to closely observe, YWC? The Hubble is not some magical device which allows us to determine if any planet is potentially able to sustain life. Our reach in the universe is incredibly small. We have observed very few planets closely enough to have much of an idea of their conditions.
And yes, life would be rough.....in space. However, if there are other planets similar to Earth, life would be less rough within their atmospheres.
You really should stay away from these discussions. They do nothing to support your points and show off how little you appreciate the vastness of the universe, as well as how much you overestimate man's knowledge.
Trust me I don't over estimate man's knowledge of the universe. But there is none, zero evidence of a planet being similar to earth. There is zero evidence of life existing on other planets. Just because the universe is vast does not mean there is another planet like earth out there and it supports life.
It actually looks worst coming from your side because the universe is so vast there is no reason believe life does not exist out there or there is no planet out there like this one. The main reason to make a claim like this is to try and take away the uniqueness of this planet.
About the hubble telescope they can see galaxies that supposedly formed shortly after the big bang about 13.1 billion years away and you don't think they can see near by planets if life exists on them ? Or an enviornment that could even support life ?
Hubble telescope finds farthest galaxy protocluster ever seen (Wired UK)
Do you realize how much closer mars and saturn are from earth ?
The ability to even deduce that planets orbit other stars is very recent. Even at that, it it the dimming light of the star as the planet eclipses it that gives it away.
Of the billions of stars that can be "seen", the ability to study the planets is very difficult to say the least.