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Solar System Exam: Name:
Solar System Exam: Name:

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Formation of the solar system
Formation of the solar system

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Review Handout - Sturgeon Moodle

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How Was the Solar System Formed?

... As the disk continued to spin over millions of years, the mass in the center continued to grow. The temperature increased. Eventually it caught fire, and nuclear fusion began. This event was the birth of our Sun. The disk continued to spin. It contained all the gas and dust that did not go into the ...
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Space Jeopardy

... The sun appears to be the brightest star in the sky because it is the _________ to the earth. ...
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Earth,Notes,RevQs,Ch24

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Semester Final Review PPT

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Our Solar System - After School Astronomy Clubs

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Evolution of Earth - Valhalla High School

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solar system review jeopardy

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Lecture - Faculty

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Test #2

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Late Heavy Bombardment



The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is a hypothetical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, corresponding to the Neohadean and Eoarchean eras on Earth. During this interval, a disproportionately large number of asteroids apparently collided with the early terrestrial planets in the inner Solar System, including Mercury, Venus, Earth, and Mars. The LHB happened after the Earth and other rocky planets had formed and accreted most of their mass, but still quite early in Earth's history.Evidence for the LHB derives from lunar samples brought back by the Apollo astronauts. Isotopic dating of Moon rocks implies that most impact melts occurred in a rather narrow interval of time. Several hypotheses are now offered to explain the apparent spike in the flux of impactors (i.e. asteroids and comets) in the inner Solar System, but no consensus yet exists. The Nice model is popular among planetary scientists; it postulates that the gas giant planets underwent orbital migration and scattered objects in the asteroid and/or Kuiper belts into eccentric orbits, and thereby into the path of the terrestrial planets. Other researchers argue that the lunar sample data do not require a cataclysmic cratering event near 3.9 Ga, and that the apparent clustering of impact melt ages near this time is an artifact of sampling materials retrieved from a single large impact basin. They also note that the rate of impact cratering could be significantly different between the outer and inner zones of the Solar System.
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