What are Comets?
People have observed comets for thousands of years.
As comets approaches the sun,
they develop
a coma around the nucleus &
the
tails that bends with the solar wind.
Introduction
1 - 2 -
3 - 4, Science
5 - 6 -
7 - 8 -
9 -
10, Technology 11 -
12 - 13 -
14 -
15,
Opportunities 16 -
17 - 18 -
19 - 20 -
21 - 22, & Economics
23 -
24