The Lifeverse is an imaginary verse that has all of its 31.8 billion planets with life like the Earth.
If a planet was hit by an asteroid and all of its life dissapeared, the planet will dissapear, but this is impossible, because all planets, minor planets, moons and asteroids orbits are in a seemingly perfectly circular orbit (0-0.1 of eccentricity).
Also, 89.3% of the life is terrestrial, 10% aquatic, and 0.7% is aerial.