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nasa.gov
https://spaceplace.nasa.gov/nebula/en
What Is a Nebula? | NASA Space Place – NASA Science for Kids
网页2024年9月27日 · A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. Watch this video to learn all about nebulae!
nasa.gov
https://spaceplace.nasa.gov/search/nebula
Nebula | NASA Space Place – NASA Science for Kids
网页2024年8月5日 · Galaxies, nebulae, and supernova remnants to view or print. explore; Glossary. Find definitions of space and Earth science terms . explore; How Scary Is Space? Check out these nine unearthly nightmares that could be happening right now in our own galaxy. Eek! explore; Printed Product Downloads
nasa.gov
https://spaceplace.nasa.gov/supernova/en
What Is a Supernova? | NASA Space Place – NASA Science for Kids
网页2024年9月27日 · Imagine something one million times the mass of Earth collapsing in 15 seconds! The collapse happens so quickly that it creates enormous shock waves that cause the outer part of the star to explode! Usually a very dense core is left behind, along with an expanding cloud of hot gas called a nebula.
nasa.gov
https://spaceplace.nasa.gov/galaxy/en
What Is a Galaxy? | NASA Space Place – NASA Science for Kids
网页2024年9月27日 · A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle. When you look up at stars in the night sky, you’re seeing other stars in the Milky Way.
nasa.gov
https://spaceplace.nasa.gov/dark-matter/en
What Is Dark Matter? | NASA Space Place – NASA Science for Kids
网页2024年9月27日 · Dark matter is that invisible glue that keeps stars, dust, and gas together in a galaxy. This mysterious substance makes up the majority of a galaxy's mass and forms the foundation of our Universe's structure. Dark matter is still one of the greatest mysteries of science. Credit: NASA/JPL-Caltech.
nasa.gov
https://spaceplace.nasa.gov/search/nebulas
Nebulas | NASA Space Place – NASA Science for Kids
网页2024年8月5日 · Galaxies, nebulae, and supernova remnants to view or print. explore; What Is a Supernova? Learn more about these exploding stars! explore; How Do Telescopes Work? Telescopes use mirrors and lenses to help us see faraway objects. And mirrors tend to work better than lenses! Learn all about it here.
nasa.gov
https://spaceplace.nasa.gov/menu/play
Play | NASA Space Place – NASA Science for Kids
网页2024年9月27日 · Learn about NASA space and Earth science with our educational games for kids.
nasa.gov
https://spaceplace.nasa.gov/menu/earth
Earth | NASA Space Place – NASA Science for Kids
网页2024年9月27日 · All About Earth. Since we live here, you might think we know all there is to know about Earth. Not at all, actually! We have a lot we can learn about our home planet. Learn more about Earth and all the planets in our solar system.
nasa.gov
https://spaceplace.nasa.gov/nebula/sp
What Is a Nebula? | NASA Space Place – NASA Science for Kids
网页2024年9月17日 · Una nebulosa es una nube gigante de polvo y gas en el espacio. Algunas nebulosas provienen del gas y el polvo expulsado por la explosión de una estrella moribunda, como una supernova. Otras nebulosas son regiones donde comienzan a formarse nuevas estrellas.
nasa.gov
https://spaceplace.nasa.gov/constellations/en
What Are Constellations? | NASA Space Place – NASA Science for …
网页2024年9月27日 · Because the constellations are in a fixed location, they are often used as landmarks in the sky. Many stars, nebulae, and other objects are named after the constellations they are found in. For example, meteor showers are named for the constellation where the meteors appear to be coming from.
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