Question on planetary axis

iced199

All of you may have heard this. Without the Moon, Earth's axis would fly wildly out of control due to the other planets' gravity. Now, that makes sense, the Moon giving a stabilizing effect. But what confuses me is why Venus and Mercury both have near 0 degrees of tilt. They don't have a moon to stabilize them, so why are their axis' not flailing out of control? Is it something to do with Earth's distance from Jupiter and the Sun? I'd like to hear your ideas on this. Thanks.

nicksauce

Do you have any references for this claim? That doesn't sound right to me at all.

iced199

No, not really. I mean, I have heard it lots of times, just wondering if it was actually true.

...I should really stop believing everything I hear now that you mention it...