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 21 of 24
A new star appeared in the sky. It was very bright. It was even brighter than a planet. It stayed in the sky for a long time. It helped people learn about space. Can you see the stars at night?
Early Reader · Change the reading level on the articleA big star blew up. It was in a far place. It was very bright. People saw it for a long time. It helps us learn about space. Can you look at the stars?
Early Reader · Change the reading level on the articleA big star once blew up. It made a very bright light. We saw it from Earth. It was far away in space. This light helps us learn. Can you look at the stars?
Early Reader · Change the reading level on the articleA small car went to Mars. It had six wheels. It could drive on rocks. It used the sun for power. This car helped us learn about Mars. Do you want to visit Mars too?
Early Reader · Change the reading level on the articleThe Sun gives us light and heat. It can change how warm our world is. Long ago, the Sun was a bit dimmer. Now, our world is getting warmer. The Sun is not the reason for this heat. It is a big, bright star. Do you…
Early Reader · Change the reading level on the articleThe Sun has a hot center. It is very bright and warm. This part makes light for us. It helps us see the day. It is a big, hot ball. Can you feel the sun's heat?
Early Reader · Change the reading level on the articleThe Sun has a bright ring. It is the very last layer. This part is very hot. It is hotter than the Sun's face. You can see it during an eclipse. Do you like looking at the stars?
Early Reader · Change the reading level on the articleThe Sun has a cycle. It changes every 11 years. Dark spots appear on its face. These spots come and go. This helps us know the Sun. Do you like to look at the stars?
Early Reader · Change the reading level on the articleThe sun can have big flashes. These are called solar flares. They happen in the sun's air. The light from them can reach us. It can change how our radios work. Can you see the sun today?
Early Reader · Change the reading level on the articleThe sun sends light to Earth. This light comes from far away. It helps plants grow. It also helps animals. The light is very good for us. Do you feel the warm sun?
Early Reader · Change the reading level on the articleThe Sun gives off light. It sends out much heat. This light helps us. The Sun changes a little bit. It does this in a cycle. Can you feel the heat? We love our bright Sun.
Early Reader · Change the reading level on the articleThe Sun is very big. It is a way to weigh stars. We use the Sun to measure other things. This helps us know how big space is. It is a giant in the sky. Can you see the Sun?
Early Reader · Change the reading level on the articleTiny bits fly from the Sun. They zip through space. They go right through you! They help us learn about the Sun. They are very hard to see. Can you feel them?
Early Reader · Change the reading level on the articleThe Sun is a big, hot star. It does many things. It can flash bright light. It can send out big clouds. This helps life on Earth. Do you like the sun?
Early Reader · Change the reading level on the articleWe use the Sun to measure size. It is a very big unit. It is much bigger than our Earth. It helps us know how big stars are. It is a great tool for us. Do you like looking at stars?
Early Reader · Change the reading level on the articleThe Sun has big storms. These storms move through space. They can reach our Earth. The storms make bright lights in the sky. They are very cool to see. Do you like looking at the stars?
Early Reader · Change the reading level on the articleA solar telescope looks at the Sun. It is a special tool. It helps us see the bright star. It keeps us safe from the heat. We can learn many things. Do you want to see the Sun?
Early Reader · Change the reading level on the articleThere is a bright thing in space. It looks like a big hat. It has a dark ring around it. This shape helps it look like a hat. It is very far away. Can you look for it in the sky?
Early Reader · Change the reading level on the articleA big tool looks at the sky. It sits in a cold, white place. It helps us see far away. It finds groups of stars. This helps us learn about space. Do you like to look at stars?
Early Reader · Change the reading level on the articleThere is a huge wall in space. It is made of many stars. It is very, very long. It helps us learn about our world. It is a big find! Can you look at the stars?
Early Reader · Change the reading level on the articleA Soyuz is a space ship. It carries people into space. It can take them to a big home in the stars. This ship helps us learn about space. It is very good at its job. Would you like to fly in a rocket?
Early Reader · Change the reading level on the articlePeople want to live in space. They could build homes on the Moon. Some want to go to Mars. This helps keep people safe. It is a big job. Do you want to visit space?
Early Reader · Change the reading level on the articleWe study the far reaches of space. Scientists look at the Sun and stars. They see how the Sun helps us. It helps us send signals in the air. Space is very big and cool. Do you like to look at the stars?
Early Reader · Change the reading level on the articlePeople could live in space. These would be like space cities. They could have homes and farms. They would help us explore. It is a big idea. Would you live in a space city?
Early Reader · Change the reading level on the articleA space telescope is in space. It looks at stars. It sees past the clouds. It can see in the day. This helps us learn about space. It is very cool! Do you like stars?
Early Reader · Change the reading level on the articleSome people fly to space for fun. They see the blue Earth. They can float in the air. It is a very fast trip. It is a big adventure. Would you like to go to space?
Early Reader · Change the reading level on the articleThe sun can change things in space. It sends out big clouds. These clouds can move near Earth. They can make lights in the sky. They can even mess with our tools. Can you see the lights?
Early Reader · Change the reading level on the articleStars send light to us. This light can change. Some light is very bright. Some light is soft. We can look at this light. It helps us learn about space. What do you see in the sky?
Early Reader · Change the reading level on the articlePeople look at the stars. They find where things are. This helps us find our way. It helps us tell time. It is very old. Do you like to look at the sky?
Early Reader · Change the reading level on the articleSpica is a bright star. It shines in the night sky. It is part of two stars. The stars stay very close. They look like one big star. It is a pretty sight to see. Can you find it?
Early Reader · Change the reading level on the articleSpirit was a robot on Mars. It had six wheels. It looked for old water. It worked for a long time. Spirit helped us learn a lot. Do you like robots?
Early Reader · Change the reading level on the articleA small machine went to space. It was called Sputnik 2. A dog named Laika went inside. She was the first animal in space. This helped us learn about the stars. Do you like dogs?
Early Reader · Change the reading level on the articleA big team is building a giant eye for space. It uses many small parts to see far away. It helps us learn about the stars. It is very big and strong. We can see the sky better now. Do you like to look at the stars?
Early Reader · Change the reading level on the articleNew stars can make more stars. Big stars push on gas clouds. This makes new stars grow. It is like a chain reaction. This helps make big shapes in space. It is so cool to see! Can you see the stars?
Early Reader · Change the reading level on the articleSome parts of space make many stars. They make stars very fast. This uses up the gas in space. It can happen in a small spot. It can happen in a whole galaxy. It is a busy place. Can you see the bright stars?
Early Reader · Change the reading level on the articleA star chart is a map. It shows the night sky. You can find stars with it. It helps us know where to go. It is very helpful. Do you like to look at stars?
Early Reader · Change the reading level on the articleSome people thought space stays the same. It would always look the same. New things would grow to fill it. This helps space stay full. We now know space changes. Do you like to look at the stars?
Early Reader · Change the reading level on the articleStars have many layers. These layers are like a big shell. The bottom part is the part we see. It is the coolest part. The outer parts are very hot. This heat is amazing! Can you see a star?
Early Reader · Change the reading level on the articleThe center of a star is very hot. It is also very heavy. This part makes the light we see. It helps the star stay bright. It is like a tiny engine. Can you feel the sun's heat?
Early Reader · Change the reading level on the articleThe Sun has a bright outer part. It is very hot. It is far from the Sun. We can see it during an eclipse. It helps us learn about space. Do you like to look at the stars?
Early Reader · Change the reading level on the articleStars come in many sizes. Some are very big. Some are very small. Our Sun is a star too. It can change over time. It might lose some of its weight. Do you like to look at the stars?
Early Reader · Change the reading level on the articleStars make new things. They use heat to build them. This makes the stuff we see. It helps make our world. Can you look at the stars?
Early Reader · Change the reading level on the articleWe can find how far stars are. As Earth moves, stars seem to shift. They move against far stars. This helps us measure space. It is like a giant map. Can you look at the stars?
Early Reader · Change the reading level on the articleStars spin around. They spin like tops. Some stars spin very fast. This makes them look fat in the middle. The spin helps them stay big. Can you imagine a spinning star?
Early Reader · Change the reading level on the articleStars blow a wind of gas. This wind comes from the star. It moves out into space. It can blow big clouds of gas. This wind helps stars change. It is a wild thing to see. Can you see the bright arc?
Early Reader · Change the reading level on the articleStory Musgrave is a man who went to space. He flew on many space ships. He also helped fix a big telescope in space. He even walked outside in space! He was a doctor too. Do you want to go to space?
Early Reader · Change the reading level on the articleThe stars and planets began a long time ago. They grew from tiny ripples. These ripples pulled things together. Now we see big groups of stars. They make a giant web in space. It is a big, beautiful home. Do you like…
Early Reader · Change the reading level on the articleStuart Roosa was a pilot. He flew a ship to the Moon. He even took seeds into space. Now, we have Moon Trees on Earth. They are very special. Do you like trees?
Early Reader · Change the reading level on the article