Read about planets, stars, galaxies and the people and tools used to explore space. Choose an article below; its reading controls let you move between the available levels.
Small worlds live far away. They stay far from the Sun. They are past the big planet Neptune. Some are red and some are blue. They are made of rock and ice. Do you want to find them?
Early Reader · Change the reading level on the articleA group of stars lives in space. They stay close together. These stars are very bright. They help light up the dark sky. They are a beautiful sight to see. Can you look for them?
Early Reader · Change the reading level on the articleThere is a small red star. It has seven planets. These planets are close to the star. Some might have water. This is very cool to see! Do you like stars?
Early Reader · Change the reading level on the articleLook at the night sky. You can see a shape. It looks like a triangle. Three bright stars make the shape. It is very pretty. Can you find it?
Early Reader · Change the reading level on the articleLook at the stars at night. You can see a shape. It looks like a small triangle. It is in the far south sky. This shape helps us find it. Do you like looking at stars?
Early Reader · Change the reading level on the articleThere is a bright cloud in space. It has three parts. This cloud is where new stars are born. It looks like a pink and blue glow. You can see it with a small tool. It is a pretty sight. Do you like looking at the stars?
Early Reader · Change the reading level on the articleSome small rocks travel in space. They follow a big planet. They stay in the same spot. This helps them stay safe. They move with the planet. Do you want to see them?
Early Reader · Change the reading level on the articleThe Sun helps us know the year. It moves in a big circle. This makes our seasons change. It brings spring and summer. It brings fall and winter. It helps us keep track of time. Do you like the seasons?
Early Reader · Change the reading level on the articleSome stars are very young. They are still growing. They can be very bright. They might have new planets nearby. It is fun to look at them. Can you see a star?
Early Reader · Change the reading level on the articleTucana is a group of stars. It looks like a bird. It is in the southern sky. You can see it at night. It is a pretty sight. Can you find it?
Early Reader · Change the reading level on the articleBig space clouds spin in circles. Some spin very fast. Some spin slow. Fast clouds are also very bright. This helps us see how far they are. We can find them in the dark sky. Can you look for stars?
Early Reader · Change the reading level on the articleA big rock fell from space. It exploded in the sky. It made a very loud sound. The blast knocked down many trees. It was a very big event. Can you imagine a sky that glows?
Early Reader · Change the reading level on the articleA young star is far away. It is near a sea snake shape in the sky. It has a ring of dust and gas. This ring helps make new worlds. Can you look for stars?
Early Reader · Change the reading level on the articleStars look like they dance. They shine and fade in the sky. This happens because of the air. The air moves around us. It bends the light from far away. It looks very pretty. Do you like to watch the stars?
Early Reader · Change the reading level on the articleSome galaxies are very big. They live in the middle of groups. These big stars grow by eating other galaxies. This makes them super large. They are the kings of space. Do you like looking at the stars?
Early Reader · Change the reading level on the articleTwo small stars can crash together. This makes a huge blast. The blast is very bright. It helps us see far away. We can see it from Earth. Do you like looking at stars?
Early Reader · Change the reading level on the articleSome stars change their light. They grow bright and then dim. These stars are very old. They help us find far places. We look up to see them. Do you like to look at stars?
Early Reader · Change the reading level on the articleA big star can go boom. It is a giant blast. It happens when a star gets too heavy. The star breaks apart in space. It is a bright light. Can you see it?
Early Reader · Change the reading level on the articlePeople use tools to see star colors. These tools help us group stars. It helps us know about the sky. We can learn more about space. It is a fun way to look up. Do you like to look at stars?
Early Reader · Change the reading level on the articleTiny bits of light fly through space. They move very, very fast. These bits have a lot of power. They come from far away. We are still learning where they start. Can you imagine flying through space?
Early Reader · Change the reading level on the articleSome light is hard to see. It is not in our sky. We use tools in space to find it. This light shows us hot stars. It helps us learn about space. Do you want to look up?
Early Reader · Change the reading level on the articleShadows have different parts. Some parts are very dark. Other parts are light. This happens when things block light. It can even happen in space. We can see these shadows too. Do you see the dark spots?
Early Reader · Change the reading level on the articleUmbriel is a moon. It goes around the planet Uranus. It is made of ice and rock. The moon looks very dark. It has many holes from space rocks. Do you like looking at the stars?
Early Reader · Change the reading level on the articleSome stars live in big swirls. They look like giant spinning tops. They do not have a bar in the middle. These swirls are very old. They are beautiful to see. Do you like to look at the stars?
Early Reader · Change the reading level on the articleSome ships go to space. They do not have people inside. They can fly very far. They help us learn about stars. We can use them to see far away. Do you want to go to space?
Early Reader · Change the reading level on the articleSome things in the sky are a mystery. People see shapes they do not know. It might be a bird or a plane. It might be a bright star. Most of these things are easy to find. Do you like to look at the sky?
Early Reader · Change the reading level on the articleThis is a big list of stars. It shows many groups in the sky. It helps us see far away. We can look at them at night. It is fun to learn. Can you see the stars?
Early Reader · Change the reading level on the articleA man used math to find a planet. He looked at the stars. He saw a planet move in a strange way. He used numbers to find where a new planet was. He found it! Can you find stars in the sky?
Early Reader · Change the reading level on the articleThis star is very big. It is one of the largest stars. It is much bigger than our Sun. It stays far away in the sky. You cannot see it with your eyes. Can you imagine a star that big?
Early Reader · Change the reading level on the articleValeri was a space traveler. He lived in space for a long time. He stayed up there for many months. This helps us learn about living in space. He was very brave. Can you imagine living in space?
Early Reader · Change the reading level on the articleEarth has a special shield. It is made of tiny bits. These bits stay high in the sky. They help keep our air safe. It is a big, invisible ring. Can you see it?
Early Reader · Change the reading level on the articleVela is a group of stars. It looks like the sails of a ship. Some stars in it are very bright. These stars can be seen from Earth. It is a beautiful part of the sky. Can you find it at night?
Early Reader · Change the reading level on the articleStars in space move in many ways. Some move fast. Some move slow. We can see how they move. This helps us know how heavy they are. It is like a big dance. Can you see the stars move?
Early Reader · Change the reading level on the articleVera Rubin loved the stars. She looked at big groups of stars. She found something hidden in space. This hidden stuff helps stars stay together. She helped many women love science too. Do you like to look at the stars?
Early Reader · Change the reading level on the articleBig dishes look at the sky. They sit on long tracks. They move to see far away. These tools help us learn about space. It is a big job. Do you like the stars?
Early Reader · Change the reading level on the articleThis is a very big tool. It looks at the stars. It has four large parts. They help us see far away. It helps us learn about space. Do you like to look at the stars?
Early Reader · Change the reading level on the articleVesto Slipher looked at the stars. He saw many bright things in space. He found that they move away from us. This helps us learn about our world. It is very cool. Do you like to look at the sky?
Early Reader · Change the reading level on the articleVirgo is a big group of stars. It is very large in the sky. You can find it by looking for a bright star. This star is named Spica. It is a pretty sight to see. Can you look for it tonight?
Early Reader · Change the reading level on the articleA big tool listens to space. It is in Italy. It looks for tiny ripples in space. These ripples help us learn. It is a very cool tool! Can you imagine listening to space?
Early Reader · Change the reading level on the articleWe look at the stars at night. We use our eyes to see them. Some people use big tools called telescopes. These help us see far away things. You can look up too! Do you like the night sky?
Early Reader · Change the reading level on the articleA vizier is a helper. They help a leader. They give good advice. This helps a whole land. Do you like to help your friends?
Early Reader · Change the reading level on the articleVladimir was a pilot. He flew ships into space. He was very smart. He helped build new tools for space. He also helped teach others. Vladimir was a brave man. Do you like stars?
Early Reader · Change the reading level on the articleLook at the stars in the sky. They make a shape. It is a fish that flies. It looks like it can glide through the air. Can you find the flying fish? It is a fun sight to see.
Early Reader · Change the reading level on the articlePeople flew to space in ships. These ships were from a place called the Soviet Union. Two people flew in one ship. One person even went for a walk in space! It was a very big step for us. Can you imagine flying in a…
Early Reader · Change the reading level on the articleA man went to space. His name was Yuri Gagarin. He flew in a small ship. It went around the Earth. The trip took a short time. He saw the world from high up. Can you imagine flying in space?
Early Reader · Change the reading level on the articlePeople went to space. They used a big rocket. A man named Yuri was first. He flew in a small ship. It was a very big deal. Do you want to go to space?
Early Reader · Change the reading level on the articleVoyager 1 is a space probe. It flies far away from Earth. It visited big planets like Jupiter. It is the farthest thing made by people. It helps us learn about space. Can you imagine flying so far?
Early Reader · Change the reading level on the articleA space ship is far away. It flies past big planets. It saw Jupiter and Saturn. It also saw Uranus and Neptune. Now it flies in deep space. It is very far from us. Do you like stars?
Early Reader · Change the reading level on the article