Monday, March 4, 2013

The Worst Possible Disaster that Could Happen to Earth




The Worst Possible Disaster that Could Happen to Earth

      If the worst possible disaster happened to Earth then there probably would not be anything left. Asteroids the size of Texas could hit Earth. Near the side of the galaxy are dust clouds with agglomerations of hydrogen gas, small molecules, and different kinds of minerals. It would take about 500 years to cross Earth. If the Solar System hits Earth it would take 100,000 years to pop out on the other side of Earth. Dust accumulated in the atmosphere blocked light from the sun. The oceans would freeze over and plants would die off, leading to no life on Earth. Underwater volcanoes can form and spill hydrogen sulfide and carbon dioxide into the atmosphere. About 250,000 million years ago 90 percent of mammals died off and 70 percent of land animals died off as well. Scientist thought that was the world's worst possible disaster. Upsides to the worst disasters would be bacteria and other microorganisms can lead to hitting the restart button for Earth.

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