Sep 25, 2025 · One type of supernova is caused by the “last hurrah” of a dying massive star. This happens when a star at least five times the mass of our sun goes out with a fantastic bang!

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 · What are the parts of a comet? At the heart of every comet is a solid, frozen core called the nucleus. This ball of dust and ice is usually less than 10 miles (16 kilometers) across …

Sep 25, 2025 · Supernova: The explosion of a star that makes it as bright as a whole galaxy. Tectonics: Big movements of Earth’s crust. Tectonics creates mountain ranges, deep sea …

Sep 25, 2025 · 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 …

Sep 25, 2025 · If you have looked into the night sky, you may have noticed the Moon appears to change shape each night. Some nights, the Moon might look like a narrow crescent. Other …

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

Aug 29, 2022 · The solar system is a pretty busy place. It’s got all kinds of planets, moons, asteroids, and comets zipping around our Sun. But how did this busy stellar neighborhood …

Sep 25, 2025 · Chances are that when you imagine the night sky, one of the first things that comes to mind is the Moon “glowing” in the darkness. The Moon has always held a special …

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 …