While Earth's moon is large for the planet's size, a new study has now found that our planet was just the right size to form such a large, life-enabling moon.

The study, by researchers from the University of Rochester in New York, found that rocky planets with a diametre more than 1.6 times that of Earth and icy planets with diametre more than 1.3 times that of Earth likely can't create moons that would have those life-enabling effects on them, Space.com reported.