State the cosmic address.
Universe, Local Supercluster, Local Group, Milky Way Galaxy, Solar System, Earth
Astronomical Units (AU): Earth’s distance from the Sun, approximately 150 million km
Light-year (ly): distance that light can travel in 1 year. Light takes 1 second to reach Earth from
the Moon and 8 minutes to reach Earth from the Sun.
Star: a large glowing ball of gas that generates heat and light through nuclear fusion as its core.
The Sun is a star.
Planet: moderately large object that orbits a star, large enough for its own gravity to make it into
a round shape and has cleared most other objects from its path.