Sep 25, 2025 · The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right …

Sep 25, 2025 · NASA science games, articles and activities for kids

Sep 25, 2025 · Big Bang All About the Sun explore Make Stretchy Universe Slime! do What Is the Big Bang? explore

Sep 25, 2025 · El Big Bang es cómo los astrónomos explican la forma en que comenzó el universo. Es la idea de que el universo comenzó como un solo punto, luego se expandió y se estiró para crecer …

Sep 25, 2025 · This led to the “Big Bang” theory, which says that the universe began with an intense burst of energy and has been expanding ever since. Edwin Hubble seated at the 100-inch reflecting …

Sep 25, 2025 · Big What Is the Big Bang? explore How Does Our Sun Compare With... explore What Is a Planet? explore Glossary explore Hear tiny sounds with a Super... do What Causes the Seasons? …

Sep 25, 2025 · It is so big that it has to fold origami-style to fit inside the rocket to launch. The telescope will unfold, sunshield first, once in space. The James Webb Space Telescope is about the same size …

Sep 25, 2025 · A gravitational wave is an invisible (yet incredibly fast) ripple in space. We’ve known about gravitational waves for a long time. More than 100 years ago, a great scientist named Albert …

Sep 25, 2025 · Our solar system is just one specific planetary system—a star with planets orbiting around it. Our planetary system is the only one officially called “solar system,” but astronomers have …

Sep 25, 2025 · It is the "noise" left from shortly after the Big Bang that began the universe billions of years ago. The different colors represent very tiny differences in energy that eventually resulted in …