Jupiter is the fifth planet from the Sun. It is oversized compared to Earth, with a diameter of 88,703 miles. Galileo first observed Jupiter's four largest moons orbiting it in 1610. Jupiter is a gas giant with no solid surface, composed primarily of hydrogen and helium. It has a strong magnetic field and is surrounded by rings and over 63 natural moons.

1. Jupiter
The Giant!

2. Jupiter - History
• Fifth planet from the Sun.
• It is named after the king of the gods.

3. Jupiter - History
• Been known for ages.
• This was the “wandering star”
• 1610 - Galileo pointed his telescope at it
and noticed 4 moons around it.
• Galileo was convinced that Copernicus was
right about the Earth and the Sun.
Discussed this openly with others.

4. Jupiter - History
• This lead to Inquisition troubles.

5. Jupiter - Planet type
• GAS Giant
– Frozen gases.
• Not a solid surface!

6. Jupiter - Distance
• 483 million miles.
• 5.2 AU away from the
Sun.
• Radio signals take 35
minutes to Earth.

7. Jupiter - Size
88, 703 miles
in diameter

8. Jupiter - Rotation, Revolution
• Rotation =
10 hours
• Revolution =
11.86 years

9. Jupiter - Natural Satellites
Jupiter has 63 known natural satellites.

10. The Moons
• Each moon is different!

11. Io
Volcanoes!

12. Callisto

13. Ganymede

14. Europa

15. Other moons

16. New Moons
• http://www.nineplanets.org/jupiter.html

17. Rings!
Jupiter also has rings! (Dark because
there’s no ice in them.)

18. Jupiter - Temperatures
• High temperature =
-180°F
• Low temperature =
-200°F

19. Jupiter’s Atmosphere
• Hydrogen
• Helium
• Methane

20. Jupiter’s Magnetic Field
• MUCH stronger than
Earth’s
• Extends beyond
Saturn!
• high levels of
energetic particles
trapped by Jupiter's
magnetic field = bad
kind of radiation for
people.
(Magnetic field
is invisible.)

21. Jupiter - Features
• Great Red Spot
– storm

22. Collision with comet

23. US Explorations
• Voyager 1 & 2
– Gave us big surprises!
– 30 years!
• Galileo spacecraft
http://voyager.jpl.nasa.gov/
Where are they now?

24. Real
Real photos
but meshed together

25. Passports?
All aboard for Saturn.