Giant planets live in the suburbs (earthsky.org)

[brush]

1. And the close in planets are most likely not to have moons as the more powerful...

Last edited Sat Jun 5, 2021, 03:31 AM - Edit history (2)

gravitational pull of the parent star outweighs the gravitational pull of smaller, close in planets to hold onto any moon, like in our solar system. Earth, father away than Mercury and Venus has only one moon while even Mars, smaller than Earth but farther from the Sun, has two. And of course the big gas giants farther out and with powerful gravity to hold onto moons, all have many moons.