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Loading contentLuminous spheres of plasma powered by nuclear fusion.
In-depth, individual pages in this category.
The brightest star in the night sky, in Canis Major.
The red supergiant on Orion's shoulder.
The blue supergiant at Orion's foot.
The brilliant blue-white star of Lyra.
The North Star, near the north celestial pole.
The closest known star to the Sun.
The nearest star system to the Sun.
The red supergiant heart of Scorpius.
The distant supergiant in the tail of Cygnus.
The fast-spinning white star of Aquila.
The orange giant eye of Taurus.
The blue star of Virgo — actually a close binary.
Stars are luminous spheres of plasma held together by their own gravity, generating energy through nuclear fusion in their cores. Their mass largely determines how they live, how they shine, and how they end.
We continue to expand this category. Upcoming material includes: