Outer Planets

9 hours and 50 minutes

jupiter’s rotation period

11.9 years

jupiter’s orbital period

30,000 °C

temperature in jupiter’s core

liquid metallic hydrogen

jupiter’s composition

lightning and thunder, light and dark bands, parallel bands

reasons jupiter is unique

IO

jupiter’s moon that has volcanoes

Callisto

jupiter’s moon that has a salty ocean

Europa

jupiter’s moon that has an icy ocean

Ganymede

jupiter’s moon that has oxygen

2nd largest

saturn’s size in our solar system

-176 °C

saturn’s average temperature

hydrogen and helium

make up saturn’s and uranus’ atmosphere

float

saturn’s lack of density allows it to do this

29.5 years

saturn’s orbital period

rock and ice

billions of pieces of these compose saturn’s ring system

Titan

saturn’s largest moon

Cassini Huigen

space probe that went to study saturn in 2004

moon that didn’t form and something sucked in and blew up

hypotheses as to how saturn’s rings formed

3rd

uranus’ size in our solar system

1781

year uranus was discovered

William Hershel

person who discovered uranus

3 billion km

distance from uranus to the sun

11

number of small rings uranus has

89 years

uranus’ orbital period

unusual rotation (on side)

uranus’ most distinctive feature

planet on its side

uranus’ nickname

voyager

discovered uranus’ rotation

17 hours

uranus’ rotation period

methane

reason for uranus’ greenish color

-214 °C

uranus’ average temperature

father of saturn

what uranus was named for

miranda and ariel

2 moons of uranus who were named after Shakespeare characters

164 years

neptune’s orbital period

16 hours

neptune rotation period

4

number of rings neptune has

god of the sea

what neptune was named after

hydrogen, helium, and methane

what voyager found largely made up neptune’s atmosphere

ice sheets of methane

makes up Neptune's upper atmosphere

dark spot

a feature of neptune

active weather system

discovered on neptune by voyager

strongest winds in the solar system

present on neptune

-225 °C

average surface temperature of neptune

Triton

neptune’s largest moon

1000 kph

neptune’s wind speeds

1930

when pluto was discovered

Clyde Tombaugh

discovered pluto

2390 km

pluto is the smallest planet with this diameter

250 years

pluto’s orbial period

6 days

pluto’s rotation period

hydrogen, rock, and ice

pluto’s composition

-236 °C

average temperature of pluto

Charon

name of pluto’s only moon that is named after a ferryman who carried dead to the underworld

1978

year pluto’s moon Charon was discovered

James Cristy

discovered pluto’s moon Charon

double planet

pluto’s nickname