True: Solar systems are formed from interstellar clouds or nebulae., As the nebula collapses, it begins to spin faster., Gravity causes the matter in the nebula to condense., Most gases are located further away from the star., The sun is the first thing that forms in the solar system., As the matter condenses, if forms planetesimals., Jupiter was the first planet to form in our solar system., The solar wind blew away most of the gases where the inner planets formed., The geocentric model couldn't explain the retrograde motion of planets., Jupiter's gravity caused the asteroids in the asteroid belt to be unable to form their own planet., Planets formed from the process of accretion., Planets orbit the sun in the shape of an ellipse because of Kepler's 1st law., 1 astronomical unit is the distance from the sun to earth., Planets move faster when closer to the sun., Galileo helped proved the heliocentric model when he discovered moons orbiting Jupiter., The center of gravity of a solar system is just above or within the surface of the solar system's sun., False: Our solar system formed from the explosion of the Big Bang., Our solar system is more than 5 billion years old., The nebula doesn't spin as it condenses., Most gases are located near the center of the solar system., The sun and planets form at the same time., Planets are just the large fragments of matter left over from a supernova., Earth was the first planet to form in our solar system., Earth's atmosphere came from the gases that were already in the area of the solar system where earth formed., The heliocentric model couldn't explain the retrograde motion of planets., The asteroid belt is located between Jupiter and Saturn., During accretion, the colliding planetesimals never caused them get smaller., Planets orbit the sun in the shape of a circle because of Kepler's first law., One astronomical unit is the distance from the earth to the moon., Planets move faster when farther away from the sun., Kepler discovered the moons of Jupiter., The center of the sun is the center of the solar system.,

Formation of the Solar System

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