Earth in the Universe Unit 1 - Astronomy
The (Observed) Universe
Galaxies
Clusters
Nebulae
Stars
Planets
“Well the Sun’s a hot star, And Mercury’s hot too “Well the Sun’s a hot star, And Mercury’s hot too! Venus is the brightest planet, And Earth’s home to me and you! Mars is the red one, And Jupiter’s most wide Saturn’s got those icy rings And Uranus spins on its side! Neptune’s really windy, And Pluto’s really small Well we wanted to name the planets, and now we’ve named them all!
Kepler 186f Similar size to earth Star is smaller, dimmer Has potential for liquid water (needed for life)
Largest planet of a circumbinary system (2 stars)
Moons
Whole universe was in a hot, dense state Almost 14 billion years ago Expansion started, continuing