What are the contents of the milky way galaxy? (what is in it? be general)

Calculate the kinetic energy of earth due to its spinning about its axis. krot = j compare your answer with the kinetic energy of the orbital motion of earth's center of mass about the sun. assume earth to be a homogeneous sphere of mass 6.00 1024 kg and radius 6.40 106 m. the radius of earth's orbit is 1.50 1011 m.

The air that we breath is made mostly of which gaseous molecule

Me with this and you will be marked brainliest