We may have had 2 moons!

[bcfcciderhead]

Found this on the beebs web site.....work is a bit slow today:D

BBC News - Earth may once have had two moons

[Geno]

Work slow here as well, thanks that passed 5 minutes.

[661-pete]

They were talking about this on the Today programme. I loved the way the presenter referred to the "dark side of the Moon" rather than "far side" (he corrected himself later in the programme). How many people have made that mistake, unthinking or not?

As to this theory: well I'm not convinced. Asymmetry in planets and moons is pretty commonplace in the Solar system (think: Iapetus for a prime example). Indeed, our own Earth is rather one-sided isn't it? Seen from one side (Pacific), it's mostly ocean; seen from the other side, it's mostly land. And in the geological past, when all the continental plates were fused into Pangaea, the one-sidedness must have been even more apparent. But of course we have different explanations for that...

[George]

Well I'm glad it crashed into the existing moon, imaging would have been a nightmare with 2 moons