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 from …

We are an amateur astronomy club located about 30 miles west of Chicago. We host regular meetings to share astronomy-related information and we coordinate viewing events around the …

May 2, 2025 · Astronomers call stars that are stably undergoing nuclear fusion of hydrogen into helium main sequence star s.This is the longest phase of a star’s life. The star’s luminosity, …

Jul 2, 2025 · star, 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 composing the …

Jan 4, 2021 · It's easy enough to say what a star is. It's one of those bright pointy things that twinkle in the night sky.But beyond that, the actual definition of a star is as rich and colorful as, …

Apr 11, 2025 · At the lower end, and to the bitter end, defining a star is tougher than you might expect

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Reconstructed view of the surface of the star Antares in the constellation of Scorpius A star-forming region in the Large Magellanic Cloud. NASA/ESA image The open star cluster Pismis …

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