Dec 20, 2025 · Star, any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. This article describes the properties and evolution of individual …

These large, swelling stars are known as red giants. But there are different ways a star’s life can end, and its fate depends on how massive the star is.

Dec 20, 2025 · The simplest way to describe a star is that it is a great ball of fire, but it is more complicated than that. A star is a giant ball of hydrogen turning into helium through nuclear fusion.

Star birth can take millions of years and create families of stars. Astronomers see examples of star formation in nebulae throughout our own Milky Way Galaxy and in many other galaxies.

May 2, 2025 · A star’s gas provides its fuel, and its mass determines how rapidly it runs through its supply, with lower-mass stars burning longer, dimmer, and cooler than very massive stars.

Apr 7, 2025 · Star+ is a subscription streaming service that includes on-demand access to movies and TV shows. It also includes live sports like NFL, NBA, NHL, and soccer from ESPN. Check out our …

May 8, 2025 · How does a star work? How do they form, live, and eventually die? Learn more about these distant objects and their major importance in the universe.

Sep 26, 2022 · How are stars named? And what happens when they die? These star facts explain the science of the night sky.

Extended Info Explore satellites, star clusters, nebulae, galaxies, asteroids, comets, and meteors with various app's extensions. Travel Through Time Visualize the sky map at any date and time in the …

Jul 15, 2014 · Stars bring wonder to our night sky, but just what is a star, exactly? Find out how different types of stars produce light, heat, and heavy elements.