View Full Version : Gas Giants Gobbled Up Most of Their Moons

2006-Jun-16, 04:49 PM
Even though our Solar System's gas giants vary widely in size and mass, they do have something in common. Each planet is roughly 10,000 times more massive than the combined mass of all their moons. During planetary formation, rocky moons grew out of the solid material surrounding each planet. As these moons grew larger, leftover gas slowed them down, and they fell into the planet to be consumed. The moons we see today were the last ones to form around their parent planets, after the gas had dissipated.

Read the full blog entry (http://www.universetoday.com/2006/06/16/gas-giants-gobbled-up-most-of-their-moons/)

2006-Jun-20, 01:16 PM
Intersesting based on modeling, but the universe is 4 billion yo, and these small bodies are just now falling into the planet?

2006-Jun-20, 04:31 PM
My impression from reading the article is that they've been falling in - it's just that the ones we see now are the only ones left.