Answer:
I have to be broken before I can be used
I am a mother from a family of eight. Spins around all day despite my weight. Had a ninth sibling before founding out it's fake.
I am a path between high natural masses; remove the first letter to get a path between man-made masses.
I dance on one feet and knows only one shape. Someone with same name as me is very good with directions
I am what bring things together. Without me everything you see would be a total mass or debris everywhere.
What is always coming but never arrives?