Based on materials provided
by the Carnegie Institution the reputable article New Clues to the Early Solar
System from Ancient Meteorites scientists
Doug Rumble and Liping Qin share
their knowledge of meteorites. Through examining samples from meteorites the
scientists were able to conclude the layers in the composition of meteorites;
including a metallic core, asilicate mantle, and a crust. In
order to achieve this composition the object must endure a lot of heat coming
from collisions and other chemical energy sources. From the composition of the crust
we can determine age of the body. There is a certain amount of elements that
should be in the core and mantle of a celestial body, but the Earth, Mars, and
our moon have more than they should. This is due to accretion, and after being
studied it shows that the core was created before these elements composed. On
Earth evidence of the accretion is not preserved because of the crust formation
and the development of our atmosphere and plate tectonics. This research shows
us a picture of the earliest days of our Solar System and it will continue to
help scientists study. Because of all the technical terms in this article, it
is a bit complicated to understand, but I think have deciphered it well.
Accretion is the process of growth
or increase, typically by the gradual accumulation of additional layers or
matter.
"New
Clues to the Early Solar System from Ancient Meteorites." ScienceDaily.
ScienceDaily, 22 July 2012. Web. 14 Oct. 2013.
http://www.sciencedaily.com/releases/2012/07/120722135204.htm
I like how you used proper citation, and defined "accretion" for your readers. I agree that you got the gist of this technical article. You captured some of the main points in your summary.
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