Astronomers have discovered more than 4,000 exoplanets, or planets outside our solar system, so far. Most of these are not particularly conducive to life.
We have to focus on certain planets that have the most promising conditions for complex life. However, we have to be careful to not get stuck looking for a second Earth because there could be planets that might be more suitable for life than ours,
NEW UFO Sightings
I think we all need to open our minds and stop thinking that we are alone in the universe. And this should not scare us. OVER 2000 NUCLEAR BOMBS were disabled by UFOs. This tells a lot about human beings.
A large size could mean more space for landmass and habitat; a larger planet would also have higher gravity, which would make for a thicker atmosphere, something that could be beneficial for organisms that travel by flight, the researchers wrote. A planet slightly warmer than Earth would be more habitable, given a lack of largely barren polar regions, but that warmer planet would also need to be wetter than Earth so that deserts wouldn't dominate the landmasses.