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Transcript
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! Saturn’s got those icy rings And Uranus spins on its side! Venus is the brightest planet, And Earth’s home to me and you! Neptune’s really windy, And Pluto’s really small Mars is the red one, And Jupiter’s most wide 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
