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Astronomical objects: Difference between revisions
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(Created page with "== Introduction == Astronomical objects are physical entities, associations, or structures that exist in the observable universe. These objects range from the smallest particles to the largest structures known to humanity. The study of these objects, their properties, and their interactions is a fundamental aspect of astronomy and astrophysics. This article delves into the various types of astronomical objects, their characteristics, and t...") |
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Stars are luminous spheres of plasma held together by their own gravity. They are the primary building blocks of galaxies and play a crucial role in the universe's energy balance. Stars form from the gravitational collapse of gas and dust in molecular clouds. The core of a star undergoes nuclear fusion, converting hydrogen into helium and releasing energy in the form of light and heat. | Stars are luminous spheres of plasma held together by their own gravity. They are the primary building blocks of galaxies and play a crucial role in the universe's energy balance. Stars form from the gravitational collapse of gas and dust in molecular clouds. The core of a star undergoes nuclear fusion, converting hydrogen into helium and releasing energy in the form of light and heat. | ||
[[Image:Detail-79743.jpg|thumb|center|A bright, luminous star shining in the night sky.|class=only_on_mobile]] | |||
[[Image:Detail-79744.jpg|thumb|center|A bright, luminous star shining in the night sky.|class=only_on_desktop]] | |||
Stars are classified based on their spectral characteristics and luminosity. The most common classification system is the [[Morgan-Keenan (MK) classification|Morgan-Keenan (MK) classification]], which categorizes stars into spectral types O, B, A, F, G, K, and M. Each type represents a range of temperatures, with O-type stars being the hottest and M-type stars being the coolest. | Stars are classified based on their spectral characteristics and luminosity. The most common classification system is the [[Morgan-Keenan (MK) classification|Morgan-Keenan (MK) classification]], which categorizes stars into spectral types O, B, A, F, G, K, and M. Each type represents a range of temperatures, with O-type stars being the hottest and M-type stars being the coolest. | ||