Home > Blossary: Blossary About Astronomy
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Category: Science

19 Terms

Created by: david105722

Number of Blossarys: 3

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A large grouping of stars. Galaxies are found in a variety of sizes and shapes. Our own Milky Way galaxy is spiral in shape and contains several billion stars. Some galaxies are so distant the their ...

Domain: Astronomy; Category: Astrometry

Areas of the Sun's surface that are cooler than surrounding areas. The usually appear black on visible light photographs of the Sun. Sunspots are usually associated disturbances in the Sun's ...

Domain: Astronomy; Category: General astronomy

The stage in a star's evolution where the core contracts and the star swells to about five hundreds times its original size. The star's temperature drops, giving it a red color.

Domain: Astronomy; Category: General astronomy

An object orbiting in the Lagrange points of another (larger) object. This name derives from a generalization of the names of some of the largest asteroids in Jupiter's Lagrange points. Saturn's ...

Domain: Astronomy; Category: General astronomy

Electromagnetic radiation of a very short wavelength and very high-energy. X-rays have shorter wavelengths than ultraviolet light but longer wavelengths than cosmic rays.

Domain: Astronomy; Category: General astronomy

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