scrap
Rags
extra, scraps
selvage
Scrap
Waste
neutron stars
Leftover material is called scrap.
extra, waste, scrap
extra, waste, scrap
It is thought that Asteroids are leftover material from unfinished planets.
No. Comets are made from the leftover material when a solar system forms.
Yes it is organic material and can be put in the garden.
Neutron star