Formation and evolution of the Solar System impact event, the Tunguska event, the Chelyabinsk meteor and the impact feature Meteor Crater in Arizona. The process of accretion, therefore, is not complete, and may still pose a threat to life on Earth. Over the course of the Solar System's evolution, comets were ejected out of the inner Solar System by the gravity of the giant planets, and sent thousands of AU outward to form the Oort cloud, a spherical outer swarm of cometary nuclei at the farthest extent of the Sun's gravitational pull. Eventually, after about 800 million years, the gravitational disruption caused by galactic tides, passing stars
East of the Sun and West of the Moon some candles, and tells her to light them at night, to see what is sharing her bed. The youngest daughter obeys, and finds he is a highly attractive prince, but she spills three drops of the melted tallow on him, waking him. He tells her that if she held out a year, he would have been free, but now he must go to his wicked stepmother, who enchanted him into this shape and lives in a castle east of the sun and west of the moon, and marry her hideous daughter, a troll princess. In the morning, the youngest daughter