28. Should Not Have A Low Mass
While having a larger mass seems obvious for a planet all of human life will need to move to, it’s much bigger than this. A small mass may not have much room but there is more to it. We know today that the smaller planets tend to have a lower gravity number.
Gravity is important to not only those living on the planet but also the gravity the planet has overall. Smaller planets can be taken out of their orbit at times due to lower gravity. This can alter all life on the planet. These planets can also have issues with rotation and axis control among several other problems.