Rosette Nebula
A big cloud of gas is in space. It looks like a rose. New stars grow inside it. These stars make the cloud glow. It is a pretty sight to see. Can you see the stars?
Early Reader · Change the reading level on the articleSpace articles — Page 20
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 20 of 24
Rover (space exploration)
A rover is a robot. It moves on other worlds. It looks at rocks and dust. It helps us learn about space. It is very cool! Do you want to go to Mars?
Early Reader · Change the reading level on the articleRoyal Observatory, Greenwich
A big building sits on a hill. It is in a park. People look at stars there. It helps us know the time. It is a museum now. Do you like looking at stars?
Early Reader · Change the reading level on the articleRR Lyrae variable
Some stars change their light. They grow bright and then dim. This happens many times. These stars help us find how far things are. They are very old stars. Do you like looking at the night sky?
Early Reader · Change the reading level on the articleRussell Alan Hulse
Russell Hulse is a scientist. He looks at the stars. He found two stars that spin. They move in a special way. This helps us learn about space. He won a big prize for his work. Do you like looking at the stars?
Early Reader · Change the reading level on the articleSagitta
Look up at the night sky. You can see a shape. It looks like an arrow. It is made of stars. This arrow is called Sagitta. Can you find it?
Early Reader · Change the reading level on the articleSagittarius B2
A giant cloud sits in space. It is made of gas and dust. It is very big and heavy. It even smells like fruit! This cloud helps make new stars. Can you look at the stars tonight?
Early Reader · Change the reading level on the articleSagittarius (constellation)
Look up at the night sky. You can see a group of stars. They look like a teapot. This is in the stars. It is fun to find. Can you see the teapot too?
Early Reader · Change the reading level on the articleSagittarius Dwarf Spheroidal Galaxy
A small group of stars is near us. It is a tiny galaxy. It moves in a big loop. It is being pulled apart by our galaxy. This helps make new stars. Can you look at the stars tonight?
Early Reader · Change the reading level on the articleSally Ride
Sally Ride was a brave pilot. She flew a ship into space. She was the first American woman to do this. This was a big deal for all of us. We can do great things too. Do you want to fly to the stars?
Early Reader · Change the reading level on the articleSalyut 1
Salyut 1 was a home in space. It was the first one ever. It stayed high above the Earth. People went there to do science. It was a big step for us. Can you imagine living in space?
Early Reader · Change the reading level on the articleSamantha Cristoforetti
Samantha is an astronaut. She flies into space. She lives on a big station in the sky. She helps us learn about stars. She is very brave. Do you want to fly to space too?
Early Reader · Change the reading level on the articleSamuel Langley
Samuel was a man who loved stars. He studied the sky. He also tried to build planes. His small planes could fly. He wanted to fly in a big one. Can you look at the stars tonight?
Early Reader · Change the reading level on the articleSandra Faber
Sandra Faber looks at the stars. She learns how space works. She helps build big tools to see far away. These tools help us see the sky. Her work helps us know the world. Do you like to look at the stars?
Early Reader · Change the reading level on the articleSaros (astronomy)
Eclipses are special sky shows. One cycle lasts 18 years. It helps us know when they happen. We can see them again soon. It is like a clock in the sky. Do you like looking at the moon?
Early Reader · Change the reading level on the articleSatellite galaxies of the Milky Way
Our home is a big galaxy. It has many small friends. These small friends are called galaxies too. Some are very close to us. You can see two in the sky. Can you find them?
Early Reader · Change the reading level on the articleSatellite galaxy
Some galaxies are small. They travel near big galaxies. They stay close like planets near a sun. Our big galaxy has many small friends. They move in circles around us. Do you like to look at the stars?
Early Reader · Change the reading level on the articleSatellite system (astronomy)
Some planets have many moons. These moons go around the planet. Some planets also have rings. These rings are made of dust. Big planets have many moons. It is a busy place! Do you like looking at the stars?
Early Reader · Change the reading level on the articleSaturn's hexagon
Saturn has a strange shape. It is a big cloud. The cloud has six sides. It looks like a shape from a book. It is very far away. Can you see the shape?
Early Reader · Change the reading level on the articleSaul Perlmutter
Saul Perlmutter looks at the stars. He studies how the sky grows. He found out the sky moves faster and faster. This is a big discovery. It helps us know our world. Do you like to look at stars?
Early Reader · Change the reading level on the articleScale factor (cosmology)
Space is getting bigger. Everything in space moves apart. It grows like a balloon. This helps us see how space grows. It is a big job. Do you want to look at the stars?
Early Reader · Change the reading level on the articleScattered disc
Far away, icy rocks fly through space. They move in big, wild circles. These rocks are very cold. Some can even turn into comets. They are far from our Sun. Do you like looking at the stars?
Early Reader · Change the reading level on the articleSchmidt–Cassegrain telescope
This tool helps us see the stars. It uses mirrors to see far away. It is small and easy to carry. You can use it to look at planets. It is a fun way to see space. Do you want to look at the moon?
Early Reader · Change the reading level on the articleSchwarzschild radius
Some things are very heavy. They can turn into a black hole. This happens if they get too small. Then, light cannot get out. It is a dark spot in space. Can you imagine a dark spot in space?
Early Reader · Change the reading level on the articleScorpius
Look at the stars at night. You can see a shape in the sky. It looks like a big bug. It has a long tail. Some stars look like a hook. Can you find it in the dark sky?
Early Reader · Change the reading level on the articleScorpius X-1
A star shines very bright. It is far away in the sky. It sends out strong light. This light helps us learn about space. It is a big, bright wonder. Can you see it in the stars?
Early Reader · Change the reading level on the articleScott Carpenter
Scott Carpenter was a brave pilot. He flew a ship into space. He also lived deep under the sea. He was a hero to many. Do you want to fly to the stars?
Early Reader · Change the reading level on the articleScott Kelly (astronaut)
Scott Kelly is an astronaut. He flies to space. He lived on a big station in the sky. He stayed there for a whole year. This helps us learn about our bodies. Do you want to go to space?
Early Reader · Change the reading level on the articleSculptor (constellation)
Sculptor is a group of stars. It is in the far south sky. It looks like a person who makes art. You can see it in the night. It is very pretty. Can you find it in the sky?
Early Reader · Change the reading level on the articleSculptor Galaxy
The Sculptor Galaxy is a big group of stars. It is very bright. Many new stars are being born there right now. It looks like a big, glowing coin. You can see it with binoculars. Can you look for it in the sky?
Early Reader · Change the reading level on the articleScutum–Centaurus Arm
Our home in space is very big. It has long arms of stars. One arm is very long. It has lots of new stars. These stars shine bright. They look so pretty. Can you see the stars?
Early Reader · Change the reading level on the articleScutum (constellation)
Look up at the night sky. You can find a small group of stars. Its name means shield. It looks like a tiny diamond. It is part of the big sky. Can you see the stars?
Early Reader · Change the reading level on the articleSearch for extraterrestrial intelligence
People look for life in space. They listen for signals from far away. We use big tools to hear. These tools look at the stars. It helps us find new friends. Do you think we are alone?
Early Reader · Change the reading level on the articleSedna (dwarf planet)
Sedna is a far away world. It is very red. It stays far from the sun. It is a cold place. It takes a long time to move around the sun. Can you imagine a world that far away?
Early Reader · Change the reading level on the articleSednoid
Some rocks live far away. They stay very far from the Sun. They do not stay near the big planets. These rocks move in long paths. They help us learn about space. Do you like looking at the stars?
Early Reader · Change the reading level on the articleSelenography
People study the Moon. They look at its big mountains. They look at its deep holes. This helps us know the Moon. It is a very cool place. Do you like the Moon?
Early Reader · Change the reading level on the articleSeptember equinox
The sun moves in a special way. It rises in the east. It sets in the west. This tells us the seasons are changing. It can mean fall is coming. Do you like the fall?
Early Reader · Change the reading level on the articleSerpens
The stars make a snake. It is in the night sky. The snake has a head and a tail. A man holds the snake. It looks very pretty. Can you find the stars?
Early Reader · Change the reading level on the articleSextans
Sextans is a group of stars. It is in the night sky. You can see it from many places. It looks like a square. It is a very faint group. Can you find it in the sky?
Early Reader · Change the reading level on the articleShape of the universe
The universe is very big. It might be flat like a sheet. It could also curve like a ball. We do not know for sure yet. Scientists look at the stars to find out. It is a big mystery! Do you like looking at the sky?
Early Reader · Change the reading level on the articleShapley Supercluster
There is a giant group of stars. It is very far away. Many galaxies live there. They pull on each other. Even our home moves toward it. It is a big part of space. Can you look at the stars?
Early Reader · Change the reading level on the articleSigmund Jähn
Sigmund Jähn was a brave pilot. He flew a ship into space. He was the first German to do this. He saw the Earth from high up. He did many science tests. This helped us learn more. Do you want to go to space?
Early Reader · Change the reading level on the articleSIMBAD
SIMBAD is a big list of stars. It helps us learn about space. It tells us many things. This helps people study the sky. It is a very big tool. Do you like to look at stars?
Early Reader · Change the reading level on the articleSky brightness
The sky is not always black. It can have light at night. The sun makes the sky bright. Even when the sun goes down, some light stays. The stars also make light. Do you like to look at the night sky?
Early Reader · Change the reading level on the articleSkylab
Skylab was a home in space. It was a big workshop. People lived there to do science. They took many photos of Earth. It helped us learn about the sun. Do you want to live in space?
Early Reader · Change the reading level on the articleSloan Digital Sky Survey
A big tool looks at the sky. It takes many pictures of space. It finds stars and far away things. This helps us learn about our world. It is a great way to see. Do you like looking at stars?
Early Reader · Change the reading level on the articleSN 1006
A long time ago, a star exploded. It was very bright in the sky. People could see it during the day. It was even brighter than the moon. It was a big surprise for everyone. Can you see bright stars at night?
Early Reader · Change the reading level on the articleSN 1054
A long time ago, a star blew up. It was very bright in the sky. People in China saw it. They called it a guest star. Now we see a cloud left behind. It is a pretty sight. Can you see the stars?
Early Reader · Change the reading level on the article