the asteroids or smaplaneterna are bodies of rock that for the most part are in orbits between mars and jupiter. the bulk of the asteroid belt lies between 2.2 and 3.3 * astronomical units from the sun.

Write the above sentence using proper case.
The asteroids or smaplaneterna are bodies of rock that for the most part are in orbits between Mars and Jupiter. The bulk of the asteroid belt lies between 2.2 and 3.3 * astronomical units from the sun.