Astrophysics

• What type of planets does our solar system consist of?

  -rocky (inner)

  -gas giants(outer)
• What is a star?

  A celestial object made up of hot gases that emits its own light and heat. (Chemical reactions)
• What is a planet?

  spherical object in orbit around a star that have a gravitational field strong enough to clear other material out of their orbit
• Dwarf planet?


  spherical object that orbits a star but can’t clear other material because it’s gravitational field is weak
• How was the solar system born?

  dust and gas, originated by the explosion of a supernova