Asteroids - статья по прочим предметам

Тезисы:

The darkest asteroids have high quantities of hydrated minerals and carbon.
There are two hypotheses about how most of the asteroids formed.
The most dangerous asteroids are extremely rare, according to NASA.
Asteroids that large strike Earth only once every 1,000 centuries on average, NASA officials say.
Quick quiz: How many planets orbit our Sun?
If you said nine, you're shy by several thousand.
Most, but not all, orbit the sun in an asteroid belt between Mars and Jupiter.
Otherwise, they might have joined up to form "real" planets.
Over time, many of them collided with others and broke apart.
When an asteroid, or a part of it, crashes into Earth, it's called a meteorite.

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