I believe they discovered a planet a couple of years ago, that they named Krypton, but i believe it has been downgraded since then to a dwarf planet or an asteriod. And I don't think it could sustain life. So no superman coming from that planet!
Not yet, but, as we have discovered water on various planets and moon, the possibility of life - as we know it - does exist.
So far no planets have been detected that harbour life.
mars and earth
Yes, Earth
as far as we know it is the only planet that has water and life
The outer planets does not have enough oxygen to sustain life, or they don't have an atmosphere at all.
No life has been discovered on other planets yet. However, given the huge amount of planets in the Universe, and the fact that hardly any planet has been thoroughly investigated, it's quite possible that life does exist.
Seeing as there are 344 discovered planets, and Earth is the only one with life, there is a 1/344 probability so far. the more planets discovered without life, the less the chances are that there could be life on them
So far, earth is the only planet known to support life, but many scientists thing that life probably exists on other planets.
So far no other life have been discovered beyond Earth but the generic term for such lifeforms would be 'aliens'.
In theory, it is possible. If the planet has the correct atmosphere and resources to sustain life. No planets so far have been discovered with grass other than Earth. However, recent explorations have revealed that a distant planet, called "Kepler 22b" seems to be perfect for sustaining life and seems to look very similar to Earth. See the related links below for more information.
There are no planets but the planet Jupiter has a moon called Europa that is covered in ice and might have a ocean full of life.