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Extinction Of Dinos
Part 1 of Paper
....popular again as an explanation for the disappearance of the
dinosaurs. An exploding star can blast material enormous distances into space. If
this material reached Earth’s atmosphere, changes may have occurred that were
harmful to life.
We call an exploding star a supernova. Nova is the Latin word for new, and .... Part 2 of Paper
....ls
through space at nearly the speed of light (186,000 miles per second)
Now, if one of these supernovae were to occur within about 130 light years
of Earth, some scientists feel that life on earth would be drastically affected.
Since a light year is the distance light travels in one year, 130 light years is about
760,000,000,000,000 (760 quadrillion miles!).
So, suppose a supernova had occurred sixty-five million years ago within 130
light years of Earth, how exactly would it cause th.... |
| Number of words: 392 - Approximate pages: 2 |
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