what would happen if the nasa find a new planet to live?

Apparently NASA have discovered a planet (Gliese 158, not really sure with the name). It's millions of light years away. I watch an episode in Discovery Channel wherein Scientist are looking forward to build a big machine like vehicle that would carry selected BABIES TO THE PLANET! So that when these babies arrive they would be fully grown up. Nasa is not really sure if life could exist in Gliese but it has the same feature our Planet has. This aint sure, this is just one of the plans of NASA to uncover the mystery within this planet.

It's a planetary chauvinism to think only of settling planets and moons, indeed a lack of imagination to think we would need a planet just like Earth to live on.

It would make more sense to settle space in O'Neill Cylinders, Bernal Spheres and Stanford Toruses. Large structures can be built in space as they do not have to support weight till complete. Materials are available from the Moon, the asteroids and even from Mars. There is no planetary gravitational well to launch against and no dangerous re-entry on arrival. City scale habitats are easier to balance than smaller habitats. The sheer scale of the structures provide radiation shielding by mass. Solar energy is reliable in space. And most importantly, full 1-G gravity can be attained by rotation.

We've already found exo-planets that are close enough to believe they are habitable but they are very very far away. There would be no effort to try and reach them, not even with a probe even if we thought the planet was exactly like Earth, the distance would just be too great.

There would be practically no hope of going there. It would take hundreds of years to reach it. Building a planet is about the hardest thing I've ever heard of. We'll be travelling across the galaxy with crazy future technology that lets us go faster than light before we "build" planets.

if it were within our solar system (almost zero chance of discovering such a new planet) nasa might get some funds to send a robot probe there. that's about all that would happen. if it were around another star, nothing would happen. it would be unreachable.

They already found planets that could support life. kelper22b is an example. We won't be able to go their in our life time because it is 600 light years away.

We do not have the technology to get a single human to Mars - no chance.

Difficult to reach to that point