PLANET FORMATION

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Across
  1. 3. Ancient model describing Earth as the center of the universe, with all celestial bodies orbiting around it.
  2. 4. This chemical compound (SiO) has been found to solidify around young stars and may form the cores of future planets.
  3. 5. The modern, widely accepted model of planet formation where dust and small particles gradually build up into planets.
  4. 6. What is another model today in which a planet starts as a large mass and is broken down overtime?
  5. 7. Small, long-lived stars that can burn for trillions of years and may keep forming planets long after the Sun dies.
Down
  1. 1. Space telescope that has observed gas and dust clouds around young stars, providing evidence of early planet formation.
  2. 2. Theory proposed by Kant and Laplace suggesting that the solar system formed from a large cloud of gas and dust called a solar nebula.
  3. 4. 18th-century scientist who suggested planets formed from shattered shell material around the Sun that later came together.
  4. 8. A rotating region of gas and dust around a young star where planets can form.