Sep 25, 2025 · A supernova of a star more than about 10 times the size of our sun may leave behind the densest objects in the universe— black holes. The Crab Nebula is the leftover, or …

Sep 25, 2025 · Una supernova es la explosión más grande que los humanos hayan contemplado jamás. Todas las explosiones de las estrellas son extremadamente brillantes y superpoderosas.

Sep 25, 2025 · Interstellar space begins where the sun’s magnetic field stops affecting its surroundings. Space Place in a Snap tackles this fascinating question! Galaxies, nebulae, and …

Sep 25, 2025 · What's This Big Bang All About? In 1927, an astronomer named Georges Lemaître had a big idea. He said that a very long time ago, the universe started as just a …

Sep 25, 2025 · A satellite is anything that orbits a planet or a star. Earth is a satellite orbiting the Sun. The Moon is a satellite orbiting Earth. When you launch a spacecraft into orbit around …

Sep 25, 2025 · Supernova What Is a Supernova? explore Glossary explore Glossary for "Sign Here!" words Explore the Electromagnetic Spectrum explore Printed Product Downloads explore

Sep 25, 2025 · It is called the supernova remnant Cassiopeia (cas-ee-oh-PE-a) A. All of the elements that make up the sun and planets in our solar system, and all the elements on Earth …

Sep 25, 2025 · Credit: NASA What causes gravitational waves? The most powerful gravitational waves are created when objects move at very high speeds. Some examples of events that …

Sep 25, 2025 · Algunas nebulosas provienen del gas y el polvo expulsado por la explosión de una estrella moribunda, como una supernova. Otras nebulosas son regiones donde …

Sep 25, 2025 · In July of 2015, a spacecraft named New Horizons arrived at Pluto after a long journey. It took amazing pictures of this dwarf planet and will continue to study other objects in …