Video: MU69 is Flat, and No One Knows Why
By: SciShow Space
MU69 is made of two bodies that are pancake and walnut shaped instead of spheres. This was unexpected as it doesn’t confirm with the current theory that planets were created by matter collecting in the protoplanetary disk and creating larger and larger spheres.
Data from Gaia shows that the Andromeda galaxy is set to collide with the Milky Way in about 4.5 billion years, which is 600 million years longer than the previous estimate.
It’s unlikely the two galaxies will have a direct head on collision as previously thought. They’ll go a bit past each other before circling back to form a single galaxy.