Star classification chart & guide. Learn about all the main star types and their characteristics, including life cycle, mass, size, luminosity, temperature.

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 Earth …

Explore the mesmerizing world of stars, their life cycle from nebulae to black holes, different types like red giants and white dwarfs.

Although main-sequence Red dwarfs are the most common stars in the universe, there are 7 main types of stars in total. Here is some information about each type of known star in our universe. Below, is a …

Dec 20, 2025 · 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 observable universe, …

Throughout its life cycle, a star will be a protostar, a pre-main-sequence star, a main sequence star, and possibly a giant or supergiant. Depending on its initial mass, it will end its life as a white dwarf, a …

May 3, 2023 · Star clusters can contain anywhere from as few as a dozen stars to upwards of millions, and those stars can be spread out over a few light-years to hundreds of light-years.

Jan 8, 2020 · Our Sun is a main-sequence star, and so are our nearest neighbors, Sirius and Alpha Centauri A. The majority of stars, at least until now observed, are typically red dwarf stars.

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.

During December you can watch for some impressive shooting stars and spend some time with the “Demon Star,” which can’t decide how bright it wants to be. Bundle up, grab your curiosity, and head …