1. Revolution vs. Rotation
When a celestial body moves around a central point (orbit)
Revolution is responsible for our SEASONS.
Revolution is responsible for our YEARS.
(1 full revolution = 1 Earth Year)

2. Revolution vs. Rotation
The spinning motion around the axis of a celestial body
Rotation is responsible for our DAYS / NIGHTS
NIGHT
DAYLIGHT
DAY

3. Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune My
Very
Energetic
Mother
Just
Served Us
Nachos

4. Mercury Mass (Earth = 1) : 0.055 Revolution (year) : 87.97 days
Rotation (day) : days
Moons : 0
Atmospheric Composition: Principally of helium and hydrogen with little amounts of sodium, oxygen, neon, argon and potassium
Mercury has been visited by two spacecraft, Mariner 10 and MESSENGER.

5. Venus Mass (Earth = 1) : 0.81 Revolution (year) : 224.7 days
Rotation (day) : days* (Retrograde Rotation)
Moons : 0
Atmospheric Composition: About 92% Carbon dioxide, 3.5% nitrogen
The first spacecraft to visit Venus was Mariner 2 in It has been visited by many others (more than 20 in all so far).

6. Earth Mass (Earth = 1) : 1 Revolution (year) : 365.25 days
Rotation (day) : hours
Moons : 1
Atmospheric Composition: 78% Nitrogen, 21% Oxygen and 1% water vapour, argon, carbon dioxide and other trace gases.

7. Mars Mass (Earth = 1) : 0.11 Revolution (year) : 1.88 years
Rotation (day) : hours
Moons : 2
Atmospheric Composition: 95% Carbon dioxide, 2.7% Nitrogen, 1.6% Argon, 0.7% Oxygen, carbon monoxide and water vapor
The first spacecraft to visit Mars was Mariner 4 in Several others followed. We Currently have 3 spacecraft on Mars, the Spirit, the Opportunity, and the Phoenix.

8. Jupiter Mass (Earth = 1) : 318 Revolution (year) : 11.86 years
Rotation (day) : hours
Moons : over 30
Atmospheric Composition:90% Hydrogen, 10% Helium with traces of ammonia, methane and water vapor
Jupiter was first visited by Pioneer 10 in 1973 and later by Pioneer 11, Voyager 1, Voyager 2 and Ulysses. The spacecraft Galileo orbited Jupiter for eight years.

9. One of the five deadliest storms in the history of the United States.
Hurricane Katrina (2005)
One of the five deadliest storms in the history of the United States.
Highest Winds:
175 mph (280 km/h)
Responsible for $81.2 billion in damages.

10. Storm has been occurring for over 300 years
Highest Winds: 270mph
It is a swirling gas mass of extremely cold temperatures (-121oC, -186oF)

11. Saturn Mass (Earth = 1) : 95.18 Revolution (year) : 29.46 years
Rotation (day) : hours
Moons :18
Atmospheric Composition: 94% Hydrogen, 6% helium with traces of ammonia, methane and water vapor

12. Uranus Mass (Earth = 1) : 14.5 Revolution (year) : 84.01 years
Rotation (day) : hours* (Retrograde Revolution)
Moons :15
Atmospheric Composition: 85% Hydrogen, 12% helium and 3% methane

13. Neptune Mass (Earth = 1) : 17.14 Revolution (year) : 164.79 years
Rotation (day) : hours
Moons :8
Atmospheric Composition: 85% Hydrogen, 13% Helium and 2% methane

14. How small is Pluto?

16. Planets around Other Stars
Current count (so far)
Over 100 planetary systems
Over 200 planets
Over 20 multiple planet systems
At least 15% of sun-like stars have planets