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Star trek fleet command raw ore locations The nearest star to Earth is the Sun, which is the source of most of the energy on Earth. This stage is known as the main sequence, where the star burns hydrogen into helium. A star is a luminous spheroid of plasma held together by self-gravity. Stars produce their own light and energy by a process called nuclear fusion. [1] The nearest star to Earth is the Sun. NASA photo. A star is a giant ball of hydrogen turning into helium through nuclear fusion. Nov 16, 2025 · The simplest way to describe a star is that it is a great ball of fire, but it is more complicated than that. Apr 11, 2025 · In a very broad sense, a star is simply one of those twinkling points of light you can see in the night sky. Of the tens of billions of trillions of stars in the observable universe, only a very small percentage are visible to the naked eye. But that’s not terribly satisfying in either lexicological or physical terms. The Pleiades, an open cluster of stars in the constellation of Taurus. When this happens, a tremendous amount of energy is created causing the star to heat up and shine. These large, swelling stars are known as red giants. Fusion happens when lighter elements are forced to become heavier elements. Other stars are visible in the night sky, when they are not outshone by the Sun. Oct 22, 2025 · Main Sequence: The protostar continues to collapse until nuclear fusion begins in its core, leading to the formation of a stable star. Oct 27, 2025 · A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. A star is a huge sphere of very hot, glowing gas. 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. A star is a luminous spheroid of plasma held together by self-gravity. A star is a massive, luminous ball of plasma that is held together by its own gravity. But there are different ways a star’s life can end, and its fate depends on how massive the star is. . Stars come in a variety of sizes and colors. 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. Many other stars are visible to the naked eye at night; their immense distances from Earth make them appear as fixed points of light.