2025年3月17日 · Nebulae are made of dust and gases—mostly hydrogen and helium. The dust and gases in a nebula are very spread out, but gravity can slowly begin to pull together clumps of dust and gas. As these clumps get bigger and bigger, their gravity gets stronger and stronger.

2024年10月11日 · Test your nebulae knowledge and match these tumultuous clouds of gas and dust with their true names. These nebula views were taken by the Hubble Space Telescope, which is a telescope about the size of a school bus that orbits around Earth!

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

2025年3月6日 · Dark matter is stuff in space that has gravity, but it is invisible and isn’t like anything else we know about. Dark matter makes up about 27% of the universe.

2025年3月17日 · A nebula is a cloud of dust and gas in space. 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.

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.

2025年3月17日 · If you're ever near the North or South Pole, you may be in for a very special treat. Frequently there are beautiful light shows in the sky. These lights are called auroras.If you're near the North Pole, it is called an aurora borealis or northern lights. If you're near the South Pole, it is called an aurora australis or the southern lights.. This beautiful view of the aurora was …

2025年3月17日 · Galaxies, nebulae, and supernova remnants to view or print. explore; What Is Gravity? Gravity is the force by which a planet or other body draws objects toward its center. explore; NASA Pumpkin Stencils. Paint pumpkins with space and Earth science designs . do; Printable Space Valentines

2025年3月17日 · A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity.

2025年3月17日 · Click above to watch this video about why the sky is blue! Voiceover provided by NASA scientist Dr. Moogega Stricker. Click here to download this video (1920x1080, 87 MB, video/mp4).