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.
1,134 public articles · Page 19 of 24
People wanted to fly to space. They built small ships for this. One person sat inside each ship. The ships had food and air. They landed in the blue sea. It was a big job! Can you imagine flying in space?
Early Reader · Change the reading level on the articleStars move in the sky. They move very slowly. Most stars stay in the same place. Some stars move more. This happens because they are close to us. Can you see the stars move?
Early Reader · Change the reading level on the articleNew stars are born in space. They have dust around them. This dust can make planets. These disks are in the Orion Nebula. We can see them from Earth. Do you like looking at stars?
Early Reader · Change the reading level on the articleThe sun makes light and heat. It does this in its center. Tiny bits join together. This makes food for the sun. It keeps the sun big and bright. It helps us stay warm. Do you feel the sun's heat?
Early Reader · Change the reading level on the articleSpace has baby planets. They grow very big. Rocks crash into each other. This helps them get larger. They can turn into real planets. Do you like looking at stars?
Early Reader · Change the reading level on the articleA new star is born. It has a big ring of dust. This ring is flat like pizza dough. The dust helps make planets. It can even help make life! Do you like looking at the stars?
Early Reader · Change the reading level on the articleA star changes as it grows old. It lets out clouds of gas. These clouds look like bright shapes. It is a very fast change. We can see it in space. Do you like looking at stars?
Early Reader · Change the reading level on the articleThere is a star near us. It is very far away. It is small and red. We cannot see it with our eyes. It has planets around it. Do you like stars?
Early Reader · Change the reading level on the articleThere is a far off world. It is near a small star. This world is like our Earth. It might be a good place to live. We want to learn more. Do you want to go there?
Early Reader · Change the reading level on the articleA star spins very fast. It spins in the sky. It acts like a light. It helps us tell time. It is a bright star. Can you see it?
Early Reader · Change the reading level on the articlePuppis is a group of stars. It is in the far south sky. It used to be part of a big ship. Now it is its own part. You can look for it at night. Do you like to look at stars?
Early Reader · Change the reading level on the articlePyxis is a group of stars. It is in the sky. It looks like a tool for ships. This group of stars is very far away. It is fun to look for. Can you find it?
Early Reader · Change the reading level on the articleLong ago, people saw a shape in the sky. It looked like a tool on a wall. It was made of bright stars. Now, that shape is gone. We use new names for those stars. Can you find them?
Early Reader · Change the reading level on the articleQuaoar is a cold world. It lives far from the Sun. It has thin rings around it. It also has a moon. This place is very far away. Do you like space?
Early Reader · Change the reading level on the articleLong ago, the world was very hot. Tiny bits flew around in the heat. They could not stick together yet. This was a very busy time. It helps us know how we began. Can you imagine such a hot place?
Early Reader · Change the reading level on the articleSome stars are very special. They are very small and heavy. They might be made of tiny bits. We do not know if they are real. They would be a big surprise! Can you find a star in the sky?
Early Reader · Change the reading level on the articleA big group of stars lives there. They are very bright. These stars make a big cloud glow. They are very young and big. It is a busy place. Do you like looking at stars?
Early Reader · Change the reading level on the articleThe Sun has a bright inside. Heat moves through this part. It moves like tiny bits of light. It takes a long time to get out. This helps the Sun stay hot. Can you feel the Sun's heat?
Early Reader · Change the reading level on the articleWe can look at space with radio waves. These waves come from far away. They come from stars and our own galaxy. Big dishes help us hear them. It is like listening to a secret. Can you hear the stars?
Early Reader · Change the reading level on the articleSome stars are very quiet. They do not make radio sounds. We can still see them. They shine with bright light. They are far away in space. Can you look at the stars? We love to find them.
Early Reader · Change the reading level on the articleEarth is a very special place. It has many things for life. We need the right sun and air. We also need big planets to help us. This might be rare in space. Do you think we are alone?
Early Reader · Change the reading level on the articleSpace is growing every day. It pulls far things away from us. This makes them move fast. It helps us see how big space is. We can look up and wonder. Do you like to look at stars?
Early Reader · Change the reading level on the articleLong ago, the world was very hot. Tiny bits of stuff moved fast. Then, the world cooled down. The bits joined to make atoms. This helped light travel far. Can you imagine a hot sky?
Early Reader · Change the reading level on the articleSome stars grow very big. They get much larger. They also turn red. This happens when they get old. They shine very bright. It is a big change. Can you see them in the sky?
Early Reader · Change the reading level on the articleSome stars are very big. They are huge and red. These stars are much bigger than our Sun. They are very bright in the sky. They help us see far away. Do you like looking at stars?
Early Reader · Change the reading level on the articleA telescope uses mirrors to see. These mirrors catch light. They help us see far stars. It helps us see the sky. Do you like to look at stars?
Early Reader · Change the reading level on the articleSome clouds in space glow. They are made of tiny dust. A nearby star shines on the dust. This makes the dust look bright. Most of these clouds look blue. It is a pretty sight! Do you like looking at stars?
Early Reader · Change the reading level on the articleA telescope helps us see far away. It uses a glass lens to catch light. This makes things look big and bright. You can see the moon and stars. It is a fun way to look at space. Do you want to look at the sky?
Early Reader · Change the reading level on the articleRegulus is a very bright star. It is in the sky. It looks like a single star. But it is actually four stars! They live close together. It is a beautiful sight. Can you find it?
Early Reader · Change the reading level on the articleReinhard Genzel looks at the stars. He found a huge, dark spot in space. This spot is in the middle of our home in the stars. It helps us learn how space works. He won a very big prize. Do you like to look at the…
Early Reader · Change the reading level on the articleLong ago, the sky was dark. Then, the first stars began to shine. Their light changed the air in space. This made the dark sky clear. Now we can see far away. Do you like to look at stars?
Early Reader · Change the reading level on the articleReticulum is a group of stars. It looks like a small net. It is in the far south sky. You can see it in late fall. It is very faint. Can you find it in the sky?
Early Reader · Change the reading level on the articleRhea is a moon of Saturn. It is very cold there. Most of the moon is made of ice. It has many holes from space rocks. It looks very bright. Can you find Saturn in the sky?
Early Reader · Change the reading level on the articleBig clouds live in space. They are full of dust. These clouds help make new stars. It is like a nursery for stars. It is very far away. Can you see the bright stars?
Early Reader · Change the reading level on the articleHe looked at the stars. He used tools in space. These tools saw things we cannot see. This work helps us learn. He won a big prize. Do you like the stars?
Early Reader · Change the reading level on the articleDick Gordon was a brave pilot. He flew planes in the Navy. He even flew a ship to the Moon. He saw the Moon from high up. He was a hero in space. Would you like to fly to the Moon?
Early Reader · Change the reading level on the articleWe use numbers to find stars. These numbers show where stars live. They work like a map for the sky. This helps us see the stars at night. It is like a game of hide and seek. Can you find a star?
Early Reader · Change the reading level on the articleSome star groups look like rings. They have a bright ring of stars. The middle may be empty. A small group might pass through a big one. This makes a ring shape. It is like a rock in a pond. Do you like looking at stars?
Early Reader · Change the reading level on the articleJupiter has rings. They are made of dust. These rings are very faint. They stay near the planet. We use big tools to see them. Do you like space?
Early Reader · Change the reading level on the articleNeptune has dark rings. They are made of dust. Some parts look like bright clumps. These rings spin around the planet. They help us learn about space. Can you see them?
Early Reader · Change the reading level on the articleSaturn has big rings. They go around the planet. The rings are made of ice. They look very bright. They are so big! Do you like space?
Early Reader · Change the reading level on the articleUranus has many rings. They go around the planet. The rings are very dark. They are made of ice. They help us learn about space. Do you like looking at the stars?
Early Reader · Change the reading level on the articleRoberta Bondar went to space. She was a doctor too. She did many tests in space. This helps people stay safe. She loves to take photos of Earth. Do you want to visit space?
Early Reader · Change the reading level on the articleRobert is a man who looks at stars. He found a sound from space. It was a tiny noise. This helps us know how the world began. He is a great scientist. Can you look at the stars too?
Early Reader · Change the reading level on the articleBig planets have a pull. This pull can break things. If a moon gets too close, it breaks apart. The pieces can make a ring. Space is full of surprises! Do you like looking at stars?
Early Reader · Change the reading level on the articleTwo stars can dance in space. Each star has its own space. This space holds its stuff. If a star gets too big, its stuff can fall to the other star. It is like a tiny gift. Can you see them dance?
Early Reader · Change the reading level on the articleRon Evans was a brave pilot. He flew planes in the Navy. He even flew a ship to the Moon. He stayed in space for a long time. He was a great explorer. Do you like the stars?
Early Reader · Change the reading level on the articleA special tool flew in space. It was a camera in the sky. It looked at the stars. It helped us see far away. It saw many bright things. Do you like to look at stars?
Early Reader · Change the reading level on the article