August 2011
Beginner
256 pages
8h 15m
English
Content preview from The Manga Guide to the Universe
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104 Chapter 2 From the Solar System to the Milky Way
Let me explain
the galaxy to
you a lile
beer.
Um, is she
okay?
She's fine.
This always
haens.
The diameter of the disc part
is 100,000 light-years.
100,000 light-
years? What in
the world are
you talking
about?!
It's the distance
that light travels
in 100,000 years!
That doesn’t
help at a.
Isti have no
idea what that
means.
Te me in miles,
ft, even
centimeters!!
I refuse to
respond to
this fld of
questions.
1 light-year is
9.4607309725808
× 10
15
meters =
9.46triion km =
5.88 triion miles=
aroxi mately
63,240 astronomical
units(AU)!
So 1 light-year
is roughly
6triion miles.
Even in
m
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