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Know about Jupiter Know about Saturn Know about Uranus Know about Neptune The Outer Planets

Know about Jupiter Know about Saturn Know about Uranus Know about Neptune The Outer Planets

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Know about JupiterKnow about SaturnKnow about UranusKnow about

Neptune

The Outer Planets

Jupiter’s Composition and OrbitJupiter is the Solar System’s

largest planet318 times the mass of Earth Volume is 1,400 times that

of Earth Takes nearly 12 Earth years

to cycle around the Sun Atmosphere is 90%

hydrogen and 10% helium, with small amounts of methane, ammonia and water vapor

Jupiter’s Rotation Light- and dark-colored bands

parallel to its equator The phenomenon of different

parts of a planet having different periods of rotation is known as differential rotation

Jupiter is somewhat oblate, or flattened at the poles; this is an effect of Jupiter’s swift rotation

Saturn’s CompositionSlightly smaller in

diameter than Jupiter

Only half as dense

0.7 the density of water

Has a less dense core and less liquid metallic hydrogen than Jupiter does

Saturn’s Speed of Rotation and Solar Orbit

29.5 Earth years to orbit the Sun

Rotates on its axis in 10 hours, 39 minutes

Saturn’s rings are in the plane of its equator comprised largely of rock and debris

Tilts 27 degrees with respect to its orbital plane

Titan, Saturn’s Largest Moon Largest of more than 60

moons

Second largest in the Solar System

Data from Huygens probe suggest that at one point, Titan had an atmosphere five times as dense as it is today

What Led Herschel to Discover the Planet Uranus

Object did not appear as a point of light, as stars do

It movedThat suggested a different

kind of celestial object

The Motion of Uranus and the Tilt of Its Equatorial Plane Takes 84 Earth years to orbit the Sun Axis is tilted 90 degrees to its orbital plane The poles alternate between 42 years of

sunlight and 42 years of darkness

How Uranus’s Moons Act as Shepherds for the Particles of Its Ring First reliable determination

of Uranus’s diameter used an occultation – the passing of one astronomical object in front of another

Inner moon will orbit faster than the ring’s particles

Neptune’s Wind Speeds and Differential Rotation

Experiences differential rotation – to an extreme degree

Magnetic field rotates every 16 hours and seven minutes

Strong winds and storm systems suggest that Neptune has an annual cycle of seasons

The Unusual Orbits of Neptune’s Two Major Moons Triton revolves clockwise around its planet Nereid has the most eccentric orbit

Triton

Know about JupiterKnow about SaturnKnow about UranusKnow about

Neptune

The Outer Planets