i dont think a planet collided with the Earth to form our Moon. The moon is too perfectly sized. During an eclispe, it blocks out all the light. It
appears the same size of the sun. The chances of something just happening that perfectly is astronomicle. I could be wrong tho...
this is quite interesting. perhaps it is a planet that they havn't found yet that has been in the system forever but just not known? i doubt it but
it's possible yeah?
That's only because of what time it is. Millions or billions of years ago, it blocked out far more than the sun, and in the far future, it will not
be able to block out the sun.
Kind of a neat coincidence, but it's not like it's been that way forever.