Page 169 - DK Children's Encyclopedia

Milky Way SEE ALSO

▸ ▸ Astronomy p.32
▸ ▸ Constellations p.73
The Milky Way is a galaxy, or group of stars. It ▸ ▸ Earth p.83
contains more than 200 million stars, including ▸ ▸ Galaxies p.116
our sun. Astronomers think that the Milky Way is ▸ ▸ Solar system p.233

shaped like a spiral, with two main arms. ▸ ▸ Stars p.242

▸ ▸ Universe p.263

Home galaxy Scutum–Centaurus
Our solar system is located Arm
about halfway between the
center and the edge of The Milky Way
the Milky Way. It turns will crash into another
around its center galaxy, the Andromeda
once every 240 galaxy, in about
million years. 4 billion years.

The center is
shaped like a
long bar.

The spiral
arms are
made of stars,
gas, and dust.

Everything in the Our solar system
galaxy rotates is located here, in
around its center. a small arm called
the Orion Spur.

Perseus Arm
Edwin Hubble
Edwin Hubble was a famous
American astronomer of the
20th century. He was the
first person to realize that
there are other galaxies View from Earth
beyond the Milky Way. From Earth, we can see
He also measured the
distances between the Milky Way as a faint
galaxies. white band across the
night sky. The light we
see is created by billions
of shining stars.
The Milky Way from Earth
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