Truest answer is we don't know.
Extra solar planetary science is still in its infancy. There have been several super Earths discovered in other systems, but it is not certain for those planets support life, of it they would be habitable by humans.
What we do know is that we do not have the technology yet to reach them even if they could support human life.
mars
mars
Earth is the most habitable planet in the solar system, which is why there is so much life on it. As far as we know, no other planet has life on it. Mars could possibly support human life, with supports to help them.
earth is the only known habitable place because its the only one with water, food, and has the right temperature range for life as we know it, but scientists are discovering planets a lot like earth, but none are habitable for humans
As far as we know, Earth is the only habitable planet in our solar system. Other planets in our solar system do not have the unique combination of factors that make Earth capable of supporting life as we know it.
earth..The most habitable planet in the Solar System is Earth. As of June 2014, Earth is the only planet that has sustained known living things.
mars
mars
i have no idea ok im done
Temperature is one factor that makes an environment habitable for a species.If Earth were destroyed, humans would have to locate another habitable planet.
There is currently no known planet that is habitable for all living things. Different organisms have different environmental requirements, which makes it challenging to find a single planet that can support the diverse range of life found on Earth.
If We are talking about planets, That planet need to me in what they called Habitable Zone What Is a Habitable Zone A Habitable Zone is the distance between a Star (Sun) and a planet, in which a planet like Earth can maintain liquid (water) and a distance which can allow water not to freeze or evaporates.
The habitable zone is defined as the region in a star centered orbit where an Earth like planet can maintain liquid water on its surface.
Earth is the most habitable planet in the solar system, which is why there is so much life on it. As far as we know, no other planet has life on it. Mars could possibly support human life, with supports to help them.
earth is the only known habitable place because its the only one with water, food, and has the right temperature range for life as we know it, but scientists are discovering planets a lot like earth, but none are habitable for humans
Gliese 581 e is a planet with a mass similar to Earth and within the "habitable zone". See related links for more information
The third closest planet to the sun is Earth, following Mercury and Venus. Earth is the only planet known to support life and is located in the habitable zone of our solar system.