Astrophysics

• Smaller stars life cycles are: main sequence, red giant, white dwarf, black dwarf
• Larger stars life cycles are: main sequence, red supergiant, supernova, black hole
• Planets that orbit close to the sun are faster as the gravitational attraction is bigger
• planets, moons and man made satellites are all in orbit and are held in orbit by gravity and travel in circular motions
• the solar system is part of the Milky Way galaxy
• the solar system is made up of: the sun, eight planets and dwarf planets, moons, comets and asteroids
• the sun is the only star in the solar system
• the planets orbit the sun
• the sun was formed from a dust and gas cloud called a nebula
• comets and asteroids are balls of ice and rock