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 10 of 24
Some space groups are very small. They are like tiny neighbors to big groups. They have many stars in them. They help build the big groups we see. They are very cool to find. Do you like looking at the stars?
Early Reader · Change the reading level on the articleDysnomia is a moon. It stays near a dwarf planet. The moon is very dark. It looks like coal. This moon is made of ice. It is far away in space. Do you like looking at the stars?
Early Reader · Change the reading level on the articleSome worlds are like our Earth. They might have air and water. These places could have life too. We look at the stars to find them. It is a big hunt! Do you think we will find a twin?
Early Reader · Change the reading level on the articleSunlight hits our big Earth. Then the light bounces off. It travels to the Moon. This makes the dark Moon glow. It looks like a soft light. Can you see it in the sky?
Early Reader · Change the reading level on the articleThe Earth is very big. It has a lot of stuff inside. Most of it is hard metal. This helps us know how big other planets are. It is a big job to weigh our world. Can you imagine how heavy it is?
Early Reader · Change the reading level on the articleA man took a photo of Earth. He was far away in space. He saw our blue home rise up. It was a very special view. This photo helps us love our world. Can you see the blue Earth?
Early Reader · Change the reading level on the articleOur Earth moves around the Sun. It takes one year to go all the way around. This trip gives us our seasons. It makes the weather change. We move fast through space! Can you feel the Earth moving?
Early Reader · Change the reading level on the articleThe Earth makes a big shadow. It is dark and blue. You can see it in the sky. It happens when the sun goes down. It looks like a dark band. Do you want to look for it?
Early Reader · Change the reading level on the articleThe Sun, Moon, and Earth line up. This makes an eclipse. It can look very cool. You might see it from your home. It is a special time. Have you seen one?
Early Reader · Change the reading level on the articleChurch leaders meet in a big group. They talk about what to believe. They make rules for everyone to follow. These meetings help the whole church. It is a way to stay together. Do you like to talk with friends?
Early Reader · Change the reading level on the articleStars shine very bright. Light pushes out from a star. Gravity pulls the star in. These two forces stay in balance. If the light is too strong, it pushes parts away. Can you see a bright star?
Early Reader · Change the reading level on the articleEdgar Mitchell was a brave man. He flew a ship to the Moon. He was one of the first to walk there. He found many moon rocks to bring home. This helps us learn about space. Do you want to visit the Moon?
Early Reader · Change the reading level on the articleEd White was a brave man. He flew in space. He was the first American to walk outside a ship in space. This was a big deal. He helped us learn about the stars. Do you like space?
Early Reader · Change the reading level on the articleEdwin was a man who studied stars. He looked at the bright lights in space. He learned how stars make food. His work helps us know the sky. He was a great thinker. Do you like to look at stars?
Early Reader · Change the reading level on the articleStars and planets have heat. We can measure this heat. It tells us how hot they are. This helps us learn about space. Space is very big and cool. Do you like looking at stars?
Early Reader · Change the reading level on the articleThis is a giant ear for space. It sits on a hill in Germany. It listens to far away stars. It helps us learn about the sky. You can walk on a path near it. Do you like looking at stars?
Early Reader · Change the reading level on the articleEjnar Hertzsprung looked at the stars. He was a man from Denmark. He made a way to group stars. This helps us learn about space. It is very cool. Do you like to look at stars?
Early Reader · Change the reading level on the articleA long time ago, the world was very hot. It was much hotter than a fire. All the parts of the world were joined together. Then, the world began to cool down. This helped things change. Can you imagine a world so hot?
Early Reader · Change the reading level on the articleBright clouds glow in space. These clouds are made of gas. A hot star makes them shine. The gas can look red or blue. It is a pretty sight. Can you see the glow? We love to look at them.
Early Reader · Change the reading level on the articleBooks can show us the sky. These books show where stars go. They tell us where planets stay. This helps us find our way. It is like a map for space. Do you like looking at the stars?
Early Reader · Change the reading level on the articleSpace things move all the time. Stars and planets change spots. We pick one time to start. This helps us know where things go. It is like a starting line. Can you find a star?
Early Reader · Change the reading level on the articleTwo stars dance together in space. One star is very bright and blue. It shines much more than our Sun. It was once the brightest star of all. It helps us find our way. Can you see it at night?
Early Reader · Change the reading level on the articleRan is a bright star. It looks orange in the sky. This star is very close to us. It has a big planet too. We can see it from Earth. Do you like looking at stars?
Early Reader · Change the reading level on the articleThe Earth is not a perfect ball. It is a little bit fat in the middle. This happens because the Earth spins. The spin pushes the middle out. It is a very small change. Can you feel the Earth spin?
Early Reader · Change the reading level on the articleStars move in the sky. They change where they sit. This happens over a long time. It helps us find things in space. It is like a map for stars. Do you like to look at stars?
Early Reader · Change the reading level on the articleThis is a group of stars. It looks like a small horse. It is very hard to see. It is small in the sky. We can look for it at night. Do you like horses?
Early Reader · Change the reading level on the articleSome stars look like a river. It is a long shape in the sky. It is a very big group of stars. You can look for it at night. It is a beautiful sight. Do you like to look at the stars?
Early Reader · Change the reading level on the articleThis is a bright star. It is in the sky. It can grow very bright. It helps us learn about space. It is a big, amazing thing. Can you see the stars?
Early Reader · Change the reading level on the articleEudoxus was a smart man. He lived a long time ago. He loved to study the stars. He even looked at the moon. He helped us learn about space. Do you like to look at the stars?
Early Reader · Change the reading level on the articleBig tools look at the stars. They are in a place called Chile. These tools help us see far away. We can find new worlds in space. It is fun to learn! Do you like the night sky?
Early Reader · Change the reading level on the articleSome moons live far away. They orbit far away planets. These moons might have water. They could even have life! We are still looking for them. Can you imagine a new world?
Early Reader · Change the reading level on the articleSome stars are very special. They are not like our sun. They are made of tiny bits. These stars are very heavy. They are also very small. Can you imagine a tiny star? It is a big mystery!
Early Reader · Change the reading level on the articleSpace is getting bigger. Everything is moving away. The stars move far apart. This helps us see the world. It is a big wonder. Do you like looking at stars?
Early Reader · Change the reading level on the articlePeople want to visit the Moon. We send robots to see it. We also send people to walk there. It is a big goal for us. Do you want to go to the Moon?
Early Reader · Change the reading level on the articleSpace is very big. We look at far away things. We see groups of stars. These groups are far from us. They help us learn about space. It is a big wonder. Do you like to look up?
Early Reader · Change the reading level on the articleAre there smart beings in space? We do not know yet. Some people think they live on other worlds. They might send us signals. We are looking for them now. It is a big mystery. Do you think we are alone?
Early Reader · Change the reading level on the articleBig storms spin in space. They move on far planets. Some storms are very large. They can be much bigger than Earth. We can see them with tools. Do you like to look at the stars?
Early Reader · Change the reading level on the articleA giant eye looks at space. It is a very big telescope. It sits on a high hill. It sees things far away. It helps us see the stars. It is so big! Can you see the stars?
Early Reader · Change the reading level on the articleBig groups of stars are far away. We can see how fast they move. This helps us know how bright they are. It also helps us find how far they are. This is a great tool. Do you like looking at the stars?
Early Reader · Change the reading level on the articleThe Moon has a far side. We cannot see it from Earth. It has many big holes. These holes are called craters. It looks very bumpy. Do you want to see it one day?
Early Reader · Change the reading level on the articleBright flashes flash in space. They are very fast. They come from far away. They help us learn about stars. We can look for them. Do you want to look at the stars too?
Early Reader · Change the reading level on the articleA big tool flies in space. It looks at the stars. It sees bright light from far away. This helps us learn about space. It is a very cool tool. Do you like the stars?
Early Reader · Change the reading level on the articleSpace is very big. There are many stars. We think life might be out there. But we do not see anyone. Where is everybody? Do you think we are alone?
Early Reader · Change the reading level on the articleSome star groups live all by themselves. They do not stay in big crowds. They float in the dark space alone. It is like being the only one on a playground. This is a lonely way to be. Do you like to be alone sometimes?
Early Reader · Change the reading level on the articleA giant dish looks at the sky. It is in a big hole. It is the biggest one in the world. It listens for sounds from space. It helps us learn about stars. Do you want to look at the stars too?
Early Reader · Change the reading level on the articleSome stars can get very bright. They flash in the dark sky. This happens in just a few minutes. It is a big surprise! Can you see them? We look up to find them.
Early Reader · Change the reading level on the articleLong ago, many people thought the world was flat. They thought it sat on water. Some thought it was a big disk. Today we know the world is round. It is a big ball! Do you know the world is round?
Early Reader · Change the reading level on the articleThe space around us is flat. It stays flat as it grows. This must have started a long time ago. It helps stars and planets grow. We live in a big, flat world. Do you like looking at the stars?
Early Reader · Change the reading level on the article