Saturday, October 5, 2013

Blog Post #2

Moon’s craters give new clues to early solar system bombardment:

Big craters by the thousands - A research team led by Brown University mapped nearly 5,200 craters on the Moon, the first global catalog of large craters on the lunar surface. The crater analysis could shed light on planetary bombardment in the inner solar system more than 4 billion years ago.
Big craters by the thousands.

This article showed me how much craters have an impact on finding the history of our solar system.  Special photography give us detailed photos of all of the craters on the moon. More than 5,000 different sized craters within 20 meters in diameter have been showed, which proves that more than 4 billion years ago in space comets and asteroids bombarded the moon and possibly other planets and moon in our solar system.  Scientists have determined the moons oldest regions, the southern near side, and the newest regions, the north central far side of the moon, using the Lunar Orbiter Laser Altimeter.  Why were the comets that bombarded the moon so big and then overtime smaller? Some scientists believe that causing the projectiles to get smaller overtime, larger projectiles hit the moon during its infancy. Another hypothesis made by scientists is that over time, different sized objects have hit the moon causing the craters. Craters can give us detailed information, like when it hit the moon, how big it was, and most importantly how old the planet/moon is by knowing that the more crater bombardment, the older the planet/moon is. 

http://news.brown.edu/pressreleases/2010/09/moon

1 comment:

  1. Nice inclusion of the photo! But your choices of font style and color made this a little difficult to read!

    However, your summary is excellent. Not only did you capture the important findings accurately, but you also mentioned HOW (use of altimeter) the data was collected, and some hypotheses to explain the interesting results. Nicely done.

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