A star is a luminous spheroid of plasma held together by self-gravity. [1] The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense distances …

May 2, 2025 · Astronomers estimate that the universe could contain up to one septillion stars – that’s a one followed by 24 zeros. Our Milky Way alone contains more than

Jan 20, 2026 · A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. Of the tens of billions of trillions of stars in the …

The meaning of STAR is a natural luminous body visible in the sky especially at night. How to use star in a sentence.

Where Do Stars Come From? Every star forms in a huge cloud of gas and dust. Over time, gravity causes the cloud to contract, drawing the gas closer and closer together. As more gas …

Feb 6, 2026 · Stars Neutron star photobombs baby star | Space photo of the day for Feb. 3, 2026 By Kenna Hughes-Castleberry published February 3, 2026 When young stars mix with neutron …

Feb 4, 2026 · Identify the most prominent stars in the sky! Here, you’ll find stars' names, locations, and myths. Afterward, test your knowledge with our challenging quizzes!

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. But that’s not terribly satisfying in either lexicological or physical terms.

The amount of material in a star (its mass) is so huge that a nuclear reaction called nuclear fusion goes on inside it. This reaction changes hydrogen to helium and gives off heat.

Dec 18, 2025 · Scientists call a star that is fusing hydrogen to helium in its core a main sequence star. Main sequence stars make up around 90% of the universe’s stellar population.