I wonder why

I wonder if there are more undiscovered planets we haven't found?

I wonder how scabs form?
When you get a cut and blood comes out cells in your body called platelets band together and create the scab. The scab protects the wound so it can't get infected or worse. It also stops more blood from coming out.

I wonder how the universe was created?

I wonder if there are any unknown life forms on different planets?