1.Ch. 18 Lesson 1What makes up the universe?2. universe all of space & everything in it 3. galaxy system of dust, gas & millions of stars held together by gravity…
Slide 1 Our Solar System Comparative Planetology Slide 2 Terms Planet – a celestial body that is in orbit around the Sun has sufficient mass for its self-gravity to overcome…
Our Solar System Our Solar System Comparative Planetology Terms Planet â a celestial body that is in orbit around the Sun has sufficient mass for its self-gravity to overcome…