Fascinating Facts About Saturn

Saturn is a very cold planet. Its average temperature is around -274°F!

Saturn is most famous for its rings. Saturn is the only gas planet whose rings are visible through a telescope or even with a pair of binocularsl

Saturn's rings stretch out into space for a distance of nearly 50,000 miles. They are made up of a mixture of ice, rock, and dust.

Saturn has a density lower than water. That means that if there were a tub of water big enough, Saturn would float in It!

One of Saturn's moons is named Titan. Titan is one of only three terrestrial worlds in the solar system supporting a thick atmosphere. Astronomers are uncertain whether Titan is covered by oceans, land, or Ice.

Saturn

Saturn is probably most famous for its rings. These rings are made of billions of tiny pieces of ice and dust. Although these rings are very wide, they are very thin. If you look at the rings from the side, they are almost too thin to be seen.

Saturn is the second-largest planet In our solar system. It is so big that 758 Earths could fit inside it! Saturn is covered by clouds. Strong, fast winds move the clouds quickly across the planet.

Saturn has 30 moons! Its largest moon is called Titan.

Saturn is most famous for Its • spots.

Write:

Saturn's rings are made of_

mud ice

Check:

Saturn's rings are U red, yellow, and purple. □ wide, but thin.

Underline:

is the second-largest planet in our solar system. ••• is big enough to hold 758 Earths inside it.

is farther from the Sun than any other planet, is covered by fast, strong winds, has 30 moons.

Unscramble:

Saturn's largest moon is called_.

rings. . and dust moons

Stunning Saturn

Saturn is the sixth planet from the Sun and is best known for the beautiful rings around Its middle. The rings are thin and flat and made of pieces of rock and ice. They stretch more than 100,000 miles acrossl

Some scientists believe the rings are made of particles left over from the time when Saturn first became a planet. Others believe the rings are made of pieces of a moon that was torn apart when it came too close to Saturn.

Saturn is the second largest planet. Since Saturn is more than nine times farther than Earth is from the Sun, it is much colder than Earth. The planet is a giant ball of spinning gases. Saturn has at least 30 moons.

Write each answer in a sentence.

I. For what Is Saturn best known?_

2. What is one idea scientists have about how Saturn's rings were made?

3. How does Saturn compare in size with the other planets?_

4. Why is Saturn colder than Earth?_

5. How many moons does Saturn have?

The Light, Cold Planet

Like Jupiter, Saturn is a planet made mostly of gases. Saturn is the lightest of all the planets. If placed in a gigantic ocean, Saturn would float! Saturn Is a cold planet. It takes 30 Earth years to complete one orbit around the Sun. Winds blow as high as 900 miles per hour in its atmosphere. Temperatures at the top of Saturn's clouds are colder than 240 degrees below zero! Why do you think Saturn is so cold? Write your answer below.

A Visit to Saturn

1. Below are ten items you want to take for your spaceship journey to Saturn.

2. You can only take five! Select the five most important items.

3. Color your five items, cut them out, and glue them to the spaceship.

A Visit to Saturn

1. Below are ten items you want to take for your spaceship journey to Saturn.

2. You can only take five! Select the five most important items.

3. Color your five items, cut them out, and glue them to the spaceship.

Moons, Moons, And More Moons!

Saturn has many, many, many moons! Scientists know that more than 30 moons orbit Saturn. They do not know the exact number. They are still studying information sent back to Earth from the Pioneer and Voyager spacecraft. Remember the scientists' rule: A moon must be seen two different times orbiting a planet before it can be called a moon. Perhaps even more moons will be found orbiting Saturn!

One moon is named Titan. The word titan means "very big," and that's the perfect name for Saturn's biggest moon. Titan is larger than the planet Mercury, but smaller than Ganymede, Jupiter's moon. Scientists believe that Titan is the only moon in the solar system with an atmosphere. The surface may have oceans and lakes of methane gas. Other areas are filled with methane ice. The nitrogen in the atmosphere gives the sky a red-orange color.

Watch Out—Moons Ahead!

You are in a spacecraft visiting all of Saturn's moons.

Use a pencil or a crayon to draw a path through the moon maze.

Saturn's Rings

Use the code to color Saturn's rings. If the number has:

7 ten thousands, color it red. I thousand, color it blue.

4 hundred thousands, color it green. 6 tens, color it brown.

8 ones, color it yellow.

Saturn

Saturn, the sixth planet out from the Sun. is often called the "ringed planet" because it has bright rings around it. Saturn is a gas giant planet like Jupiter. It's 800 times the volume of Earth. It takes Saturn nearly 30 Earth years to circle the Sun, but only ten hours and fourteen minutes to turn once on its axis. The center of Saturn is very hot, and the tops of the clouds are very cold. The rings around Saturn look solid, but they actually are not. They are made of billions and billions of pieces of ice and rock. The ring particles orbit Saturn like tiny moons. Saturn also has 30 moons. Its largest moon is called Titan. Titan has an atmosphere, but it is poisonous to human beings.

ACROSS

3. Saturn is a gaseous ball like__

6. Tho air on Titan Is_to human beings.

8. Sixth planet In ttio solar system 10. Saturn a the _ planet in our solar system.

DOWN

2. The rings of Saturn look__but they are not.

1. Saturn Is one.

5. Number of Earth years It takes for Saturn to circle the Sun 7. tt is found in the rings of Saturn, q. Not hundreds but__

12. Saturn is_hundred times larger than the Earth.

ACROSS

3. Saturn is a gaseous ball like__

6. Tho air on Titan Is_to human beings.

8. Sixth planet In ttio solar system 10. Saturn a the _ planet in our solar system.

13. Saturn's rings ore made of pieces of _and Ico. (plural)

DOWN

2. The rings of Saturn look__but they are not.

1. Saturn Is one.

5. Number of Earth years It takes for Saturn to circle the Sun 7. tt is found in the rings of Saturn, q. Not hundreds but__

12. Saturn is_hundred times larger than the Earth.

What Is Missing?

As you know. Saturn is most famous for its beautiful rings. Saturn is the only gas planet whose rings are visible through a telescope and can even be seen with some binoculars!

This picture of Saturn is missing something. Use crayons or markers to draw what is missing from the picture below.

Fascinating Facts Aboi

Uranus is unusual because it orbits the Sun along its side — all of the other planets orbit in an upright position.

Some scientists think Uranus was struck by a large meteor at some point long ago and knocked sideways into its current position.

Uranus is so big that sixty planets the size of Earth could fit inside it!

Uranus is a "new" planet. It was discovered in 1781! This might seem like a long time ago. but compared to the other planets, it is recent.

Uranus was the first planet to be discovered with the help of a telescope. All of the other planets were bright enough to be seen from Earth without one.

Uranus

Did you know that Uranus was first thought to be a comet? Many scientists studied the mystery comet. It was soon decided that Uranus was a planet. It was the first planet to be discovered through a telescope. Scientists believe that Uranus is made of rock and metal with gas and ice surrounding it.

Even through a telescope. Uranus is not easy to see. That is because it is almost two billion miles from the Sun that lights it. It takes Uranus 84 Earth years to orbit the Sun!

Scientists know that Uranus has twenty moons and is circled by ten thin rings. But there are still many mysteries about this faraway planet.

moon

Uranus was first thought to be a CQ^e( Write:

Uranus was the first planet to be discovered through a_

telescope TV

Check:

Scientists believe that Uranus is made of:

□ rock □ oil □ metal □ oceans □ gas □ Ice Match:

two billion miles ... the number of Uranus's moons

84 Earth years . . . the distance of Uranus from the Sun twenty . . . the number of Uranus's rings ten ... the time it takes Uranus to orbit the Sun

The Green Planet

Uranus, a frozen dim world, is the seventh planet from the Sun. Uranus takes 84 Earth years to orbit the Sun one time! If you were 42 Earth years old, how old would you be on Uranus?

Can you figure out the nickname for Uranus? Unscramble each of the two words below.

NEGRE LPNAET Write Uranus's nickname:_

Add the Rings!

Remembering Its nickname, color the picture of Uranus below. Then add Uranus's rings with a pencil or crayon.

A Spin or a Roll

Planets spin as they orbit the Sun on an imaginary line called an axis. This line runs from the top to bottom through the planet. The top end of the planet is called the North Pole and the bottom end is called the South Pole.

Uranus does not spin like the other eight planets. Its axis is tipped over, so Uranus appears to be lying down. Uranus looks like a big, round watermelon rolling in space!

One complete spin on an axis is one day.

Move Like a Planet!

1. Standing up, spin around slowly five times.

2. Turn five somersaults in a row.

3. Circle which movement you would prefer If you were a planet.

to spin to roll

4. Explain your answer.

Uranus

Uranus, the seventh planet out from the Sun, is also a gas giant. It is too distant to be seen without a telescope and was discovered in 1781 in England. It is 60 times the volume of Earth. It is a blue-green color. It Is probably very hot at the center, but the tops of its clouds are cold. It has thousands of rings that are very dark and thin compared to those of Saturn. Scientists believe that the rings are made of dark dust. It also has 20 known moons. Most of them were discovered in photographs of Uranus sent back by the Voyager spacecraft that flew by in 1986. Uranus orbits the Sun once every 84 Earth years. It takes Uranus 17 hours to complete one turn on its axis.

Strange Rings

In 1186, the Voyager spacecraft passed by Uranus. It photographed small rings encircling the Green Planet. The rings are made of rocks, gases, and dust.

These rings go around the middle of the planet like the rings around Jupiter and Saturn. But, since its axis tips Uranus on its side, the rings appear to go around the top and bottom!

Make a Uranus Mobile!

1. Use a M-lnch styrofoam ball.

2. Wrap the ball In a single layer of masking tape.

3. Color the ball using green markers or paint.

t. Then use pipe cleaners to make Uranus's rings. Twist the ends of two pipe cleaners together to make a ring. Ask an adult for help and attach the rings to Uranus using straight pins.

5. Use a paper clip and string to hang your Uranus mobile from the ceiling!

Remember, Uranus's rings go around from top to bottom!

Unusual Uranus

Uranus is almost four times larger than Earth. Scientists think it has a thick, cloudy atmosphere made of hydrogen and helium gases. Deep inside is probably a solid core.

How many Earth years does Uranus take to orbit the Sun once?_

While orbiting the Sun, Uranus turns on its axis very quickly, one turn every 17 hours.

How many hours are there in one Earth day?_

Uranus has two days for every day on Earth. Scientists know the Green Planet is very cold. Temperatures probably drop lower than 240 degrees below zero.

A Crossword Puzzle About Uranus Across

2. The atmosphere is made of hydrogen and

4. Nicknamed the "_planet."

5. A day on Uranus is almost 17_long.

7. The atmosphere is_and thick.

8. Uranus doesn't spin on its axis. It_.

Down

I. An axis is an imaginary_.

3. Uranus is four times larger than this planet.

6. The seventh planet from the Sun.

7. Temperatures on Uranus are very

Close Encounter of a Mysterious Kind?

Do you know why the planet Uranus and its system of moons and rings tipped over?

Pretend the year is 2020. You are living at Uranus North Pole Station. This is no ordinary, land-based station—this station floats just above the blue-green clouds, for Uranus has no "surface" as we know it. Down beneath the station the liquids are so thick and dense that any Earthly spaceship would be crushed. At midsummer, the tiny Sun hovers near the top of the sky. It moves through a small circle every 17 hours. But as Earth years go by. the circle becomes bigger and bigger, until 21 years later the Sun moves in a giant circle that hugs the horizon. Finally, the Sun sets. For <42 years the Sun is not seen—it is winter. Luckily, because you are so far from the Sun, winter isn't much colder than any other season. Unluckily, it is always a lot colder than any place on Earth. After H2 years of winter, the Sun slowly, slowly rises in a giant circle near the horizon. Finally, for 21 more years, the Sun slowly spirals up to the center of the sky. and once again it is midsummer.

The particular view of the Sun and sky that Uranus has is totally different from anyplace else in our solar system. Why? Imagine that all the planets orbit our Sun within a giant, flat "pancake." All the planets spin like a top. But all the planets, except Uranus, spin with their north poles pointing out of the top of the pancake. Uranus's north pole points toward the thin edge of the pancake. And this is not the only strange thing about Uranus!

Uranus has at least 20 moons. These moons orbit over the planet's equator. But because its north and south poles are tipped over, Uranus's equator must also be. So the entire Uranian system is tipped over. The includes Uranus's system of rings, too!

The Twin Planets

1. Uranus and Neptune are similar in size, rotation time, and temperature. Sometimes they are called twin planets. Uranus is about 1,786,400,000 miles from the Sun. Neptune is about 2,798,800,000 miles from the Sun. What is the difference between these two distances?_

2. Neptune can complete a rotation in 18 to 20 hours. Uranus can make one in 16 to 18 hours. What is the average time it takes Neptune to complete a rotation? _Uranus?_

3. Can you believe that it is about -353°F on Neptune and about -357°F on Uranus? Brrr! That's coldl What is the temperature outside today In your town?_

How much warmer Is It in your town than on Neptune?_Uranus?_

4. Uranus has at least five small satellites moving around It. Their names are Miranda. Ariel, Umbriel, Tatania, and Oberon. They are 292, 721, 727, 982, and 945 miles In diameter, respectively. What is the average diameter of Uranus's satellites?_

5. Neptune was first seen in 1846 by Johanna G. Galle. Uranus was first discovered by Sir William Herschel

O® in 1781. How many years ago was Neptune discovered?_Uranus?_

About how many years later was Uranus discovered than Neptune?_

6. Both Uranus and Neptune have names taken from Greek and Roman mythology. Use an encyclopedia to find their names and their origins.

Fascinating Facts About Neptune

Neptune is the eighth planet from the Sun—but not always! For 20 out of every 250 years. Neptune switches places with Pluto and becomes the outermost planet in the solar system.

Neptune Is a very cold planet and a very windy one. Winds whip around Neptune at an awesome 1.400 miles per hour!

Neptune is a brilliant blue color, but on a closer look, it is colored by bands of different shades of blue. This coloring is due to a gas called methane in the atmosphere.

One of Neptune's moons is called Triton. Triton is thought to be one of the coldest worlds in our solar system. It has an average temperature of -455°F!

Neptune Is 30 times farther away from the Sun than the Earth and is 3J times larger than Earth!

The Blue-Green Giants

Uranus and Neptune are giant planets more than a billion miles from the Sun and Earth. They are about the same size. Each is more than 3} times larger than Earth. They look blue-green in photos because both have a gas called methane in their atmospheres. Uranus and Neptune are very cold planets where life probably doesn't exist.

Uranus is the seventh planet from the Sun. It is known to have at least 20 moons and II thin rings. Uranus rotates in the ^ direction opposite of Earth. It can be ™ seen from Earth without a telescope.

Neptune is farther from the Sun than Uranus. It has eight known moons and also has rings. Neptune cannot be seen without a telescope.

Decide which planet or planets each fact describes. If it describes Uranus, write Uranus. If it describes Neptune, write Neptune. If it describes both Uranus and Neptune, write both.

1. rotates In the opposite direction_

2. called a blue-green giant_

3. cannot be seen without a telescope _ t. is more than a billion miles from Earth

5. has methane in its atmosphere_

6. has at least 11 rings_

7. can be seen without a telescope

8. has eight known moons_

Neptune is the eighth planet from the Sun. It is difficult to see Neptune—even through a telescope. It is almost three billion miles from Earth.

Scientists believe that Neptune is much like Uranus—made ot rock, iron, ice, and gases. Neptune has eight moons. Scientists believe that it may also have several rings.

Neptune is so faraway from the Sun that it takes 164 Earth years for it to orbit the Sun just once!

Scientists still know very little about this cold and distant planet.

/Draw 8 moons around Neptune.

Write, Circle, or Unscramble:

I eptune is the ejghth planet from the Sun.

I arth is almost three million billion

. miles from Neptune.

IP eople know verV linle . about Neptune. ^^ very much elescopes are used to see Neptune. Yes No

' ranus and Neptune are made of: rock soap gases ice

I very orbit around the

. takes Neptune 164 Earth years.

How Many Moons?

Neptune's moons are a mystery! Scientists know at least eight moons move around the planet. One, Triton, is large and rocky and almost as big as Earth's Moon. It is almost as close to Neptune as our Moon is to Earth. Triton circles Neptune one time every six Earth days. Triton is the only moon in our solar system which revolves around a planet in the opposite direction that the planet rotates.

One of Neptune's other moons is called Nereid. It is very small and is 31 million miles from Neptune! Tiny Nereid takes 360 Earth days to go around Neptune once. That is almost one year on Earth.

Know the Moons

1. Read the facts about Neptune's moons below.

2. Draw a line from the fact to the moon it describes.

I am much bigger than TRITON I am as close to

Neptune's other moon. Neptune as Earth's

I am 3j million miles from Neptune.

I am the smaller moon.

It takes me almost one Earth year to orbit Neptune.

moon is close to Earth.

It takes me almost one Earth year to orbit Neptune.

moon is close to Earth.

It takes me 360 days to go around Neptune once.

NEREID

I revolve in the opposite direction of Neptune's rotation.

I am almost as big as Earth's moon.

NEREID

I circle Neptune once in six days.

DOWN

1. Color of Neptune

2. Nome for a small moon orbiting Noptune 1. Neptune is called the_ plonel even though It is now the farthest from the Sun.

8. Neptune gives off more_than If gets from the Sun.

Neptune, usually the eighth planet out from the Sun, is another gas giant. It is about the same size as Uranus. It is blue in color. Scientists know that Neptune gives off more heat than It gets from the Sun. It takes 165 Earth years for Neptune to orbit the Sun. It completes one turn on its axis every 16 to 18 hours. Neptune can only be seen in the night sky with a telescope.

Scientists do not yet know if Neptune has any rings, but they know it has eight moons including Triton and Nereid. Pluto Is usually the farthest planet from the Sun but not always. For 20 out of every 250 years. Neptune switches places with Pluto to become the outermost planet.

ACROSS

3. The eighth plonel In the solar system 5. This planet Is usually the farthest from the Sun.

7 Neptune Is a giant ball ol_.

Neptune completes one turn on Its axis once every 16 to _hours.

10. Neptune is about the same size as this planet.

11. Biggest moon orbiting Neptune

DOWN

1. Color of Neptune

2. Nome for a small moon orbiting Noptune 1. Neptune is called the_ plonel even though It is now the farthest from the Sun.

8. Neptune gives off more_than If gets from the Sun.

Fascinating Facts About Pluto

Although astronomers predicted Pluto's existence in the early twentieth century, it was not officially discovered until 19301

Pluto is so faraway that it appears as only a tiny speck in the largest telescopes and has not been visited by any space probes.

One year on Pluto equals 248 years on Earth!

Pluto Is the smallest planet in our solar system. Its diameter is only 1,430 miles, which is smaller than our own Moon!

Charon. Pluto's moon, is the largest satellite In the solar system. Pluto and Charon orbit so closely together that they have locked in rotation—the same sides always facing each other.

Little has been discovered about faraway Pluto, but we do know Pluto is a cold, icy planet, with an average temperature of -380°F.

Pluto

Pluto Is the ninth planet from the Sun. It is farther from the Sun than any other planet.

If you stood on Pluto, the Sun would look just like a bright star In the sky. Pluto is so faraway that it gets little of the Sun's heat. That is why it is freezing cold on Pluto.

Some scientists think that Pluto was once one of Neptune's moons that escaped from orbit and drifted into space. Other scientists believe it has always been a planet in our solar system.

Pluto is so faraway from the Sun that it takes 247 Earth years just to orbit the Sun once!

Unscramble and Circle:

is the seventh p|anet from the Sun n u S

than any other planet.

On Pluto, the Sun looks like a bright star. Pluto gets very little of the Sun's heat. Pluto has very hot weather. Pluto takes 247 Earth years to orbit the Sun.

Circle:

Some scientists believe that Pluto was once Neptune's

Pluto travels farther from the Sun than any other planet in our solar system. At its farthest point, It is more than four billion miles from Earth!

Pluto is also the smallest of the nine known planets. It is smaller than Earth's moon.

Scientists know very little about the planet Pluto because it Is so faraway. It Is believed to be like a rocky snowball in space. Charon is Pluto's only moon. Scientists don't think any life exists on faraway Pluto.

Unscramble each sentence so it tells one fact about Pluto. Write the fact.

1. farthest Sun Pluto travels from the

2. has moon one Pluto

3. planet smallest Pluto is the

4. travels billion more four than Earth from miles Pluto

5. Pluto's named is Charon moon

Measure the Distance!

How tiny is the smallest planet in our solar system? The ninth planet from the Sun, Pluto, is even smaller than Earth's Moon!

What Is Pluto like? This ball of frozen ice appears white. It may be partly covered by frozen methane gas. It has little or no atmosphere.

Pluto Is 31 times farther away from the Sun than the Earth Is. Scientists do not have much information about distant Pluto.

Measure the Distance!

1. Cut out the three name cards below.

2. Place one marble on the floor next to the "Sun" label.

3. Measure one inch from the Sun and place another marble and the "Earth" label.

4. Measure 38 inches and place a third marble and the "Pluto" label on the floor. Stand back and look at the distances between the three marbles. Now can you understand why Pluto takes 2M8 Earth years to travel once around the Sun?

Earth

Pluto

Pluto and Planet X

Pluto— 1.430 miles in diameter—is the smallest planet. It is also the farthest planet from the Sun at 3,666.200,000 miles away. However, this is not always true! Pluto's orbit forms a long, thin oval shape that crosses the path of Neptune's orbit every 248 years. So. for about 200 Earth years. Pluto is actually closer to the Sun than Neptune! Try this art project:

1. Use a crayon to draw the Sun in the center of the paper.

2. Use your pencil to draw the orbit of each planet, being careful to cross Pluto's with Neptune's.*

3. Color the planets along the orbits.

4. Trace the orbits in glue, then lay yarn on top.

You will need:

construction paper crayons or chalk glue yarn (various colors) pencil

•Only Pluto's and Neptune's orbits should cross.

Although there are only nine known planets, it is possible that another exists beyond Pluto. Some people refer to it as Planet X. Write a name for It below and use Information about the other planets to estimate and create answers in the chart.

Distance

Planet Name Diameter from Sun Revolution Rotation Satellites

Pluto

Pluto is usually the ninth planet out from the Sun. Pluto is like a frozen snowball circling the Sun. It may be the coldest planet in the solar system. It is smaller than Earth's moon. Some scientists think that Pluto was once a moon of Neptune. Ttie shape of Pluto's solar orbit is ellip tical or football-shaped, not circular. This means that at times it is farther from the Sun and at other times it is closer. It switches places with Neptune every so often. At this time, Pluto Is farthest from the Sun. Pluto has one moon, Charon.

ACROSS

2. At this time Pluto is farther from the Sun

DOWN

I. Pluto orbits Ihe

3. Ninth planet In our solar system

1. Pluto's moon

6. Pluto might be Ihe___planet.

7. Pluto's_orbit Is elliptical.

ACROSS

2. At this time Pluto is farther from the Sun

7. A frozen object Pluto is compared to

8. People who work and study In scientific fields

DOWN

I. Pluto orbits Ihe

3. Ninth planet In our solar system

1. Pluto's moon

6. Pluto might be Ihe___planet.

7. Pluto's_orbit Is elliptical.

A Discovery!

An exciting discovery was made in IP78! An astronomer in Washington. D.C. discovered a moon orbiting tiny Pluto. Until 1978. scientists did not think Pluto had any moons.

This moon is called Charon. Even with a telescope this moon is difficult to see because it is so close to Pluto. Scientists think Charon is very small, only 840 miles in diameter.

Charon does not weigh very much. Like planet Jupiter, this moon may not have a lot of heavy matter inside. Scientists think it may be as light as a comet! It takes little Charon 6 days, 9 hours, and 17 minutes to go around Pluto one time. This is exactly the same amount of time it takes Pluto to spin once on its axis. So, during one day on Pluto, Charon orbits the planet once.

Pluto Quiz

1. What would you have named Pluto's moon?

2. How long is one day on Pluto?

3. What Is an astronomer?

Would you like to be an astronomer? Tell why or why not.

Charon orbits close to Pluto. The pull of gravity from Charon is very strong. The pull causes geysers, jet sprays of water, to burst up from inside Pluto. The moment the water hits the surface, it freezes. This occurs all the time, causing Pluto to be continuously covered by new coats of frozen ice.

5. Do you remember what "diameter" means? Draw where the diameter would be on this planet.

6. Why do you think no one had found Charon before 1978?

4. How big is Charon?

7. What is a jet spray of water called?

Planet Fact Cards

Cut apart the cards on the pages that follow to create your own set of planet flash cards! Use therm to learn fascinating information about the planets In our solar system. Practice on your own with the flash cards or grab a friend and test both of your knowledge about the planets!

Journey to the Planets Game

You can also use the flash cards to play this card game. Have fun while learning more about the planets at the same time!

How to Play:

1. Cut apart the cards and deal four cards to each player. The remaining cards are placed facedown in a pile. The dealer draws the top card and lays it faceup to begin the discard pile.

2. The players look at their cards and decide (without telling anyone) which planet they are going to try to collect.

3. The first player picks up a card from either the deck or the discard pile. If the player wants to keep the card, he or she discards an unwanted card from their hand. If the player doesn't want the card, he or she places it faceup on the discard pile.

4. Players take turn drawing cards, and if all the cards have been drawn from the deck, players reshuffle and start a new deck.

5. The first player to collect all four cards about their planet plus a space shuttle card wins!

r\

Ht

IVIercury is the closest

planet to the Sun.

If you lived on Mercury.

the Sun would look twice

as large In the sky than it

does on Earth.

m

W

V #

\ Jr

ft/lercury has almost no

Mercury travels around

air, so there is no protection against the

the Sun faster than any

Sun's heat during the day.

other planet.

The Sun's rays are about

It takes Mercury just 88

seven times stronger on

Earth days to orbit the Sun.

Mercury than they are

on Earth.

I hen seen from Earth, Venus appears brighter than any star.

Venus looks bright because it is so close to the Sun and because it is covered by clouds that reflect much of the Sun's light.

Venus is the closest planet to Earth.

Venus is sometimes called Earth's twin because the two planets are about the same size.

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