Our solar system is made up of the Sun and the astronomical bodies that orbit it. But you may be surprised to learn that all the planets and nearly every asteroid in the solar system orbit the Sun in the same plane and in the same direction. They all move counterclockwise, if viewed from above Earth’s North Pole. What do you think caused this phenomenon?

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.