1. The Universe, Solar System,
and Planets I

2. Edwin Hubble at Mt. Wilson
Hubble guiding the Hooker
100 inch telescope in 1923.
The Hooker 100 inch telescope atop Mt. Wilson
near Pasadena, CA. It was the largest telescope in
the world from 1917-1947.

3. Deep Hubble Space Telescope Image
A deep image of an “empty”
portion of the sky with the
Hubble Space Telescope
reveals that the universe is
filled with galaxies- many just
like our own. The light
we see from the most distant
galaxies has traveled approximately 10 billion years to
reach us.

4. The Solar System - Its Origin
and Early Development
Our solar system,
part of the Milky
Way galaxy,
consists of the Sun,
nine planets, 64
known moons,
many asteroids,
millions of comets
and meteorites, as
well as
interplanetary dust
and gases

5. Vocabulary
• To magnify:
To make an object
appear larger

6. • A telescope:
A tool that makes
distant objects
appear larger,
brighter and
sharper.

7. • The sun:
Nearest star to Earth.

8. • Orbit:
To move in a path
around the sun.

9. • Planet:
A large body in
space that moves
around a star

10. • Moon:
A small rounded
body in orbit
around a planet.

11. • Solar
system:
It is made
up of the
sun,
planets,
moons and
other
objects that
orbit the
sun.

12. • Space probe:
A craft that helps
scientists explore
outer space.

13. A galaxy:
A collection of
stars, gas and dust
bound together by
gravity

14. • A comet:
A small frozen
mass of gas and
dust revolving
around the sun

15. Asteroids-Meteorites
Visitors from Outer Space
• Asteroids are rocks that revolve
around the sun, when the rock
breaks the layers of planet Earth
they become shooting stars.
• Meteorites are believed to be pieces
of material that originated in the
formation of the Solar System about
4.6 billion years ago
– Stones - composed of iron and magnesium silicates,
about 93% of all meteorites
– Irons - composed of iron and nickel alloys
– Stony-Irons - nearly equal amounts of iron and nickel
and silicate minerals

16. Movements of planet Earth
• Rotation:
The Earth spins
around its own axis
• Revolution:
The Earth revolves
around the sun.

17. • http://kids.nineplanets.org/