Home > Blossary: Blossary About Astronomy
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Category: Science

19 Terms

Created by: david105722

Number of Blossarys: 3

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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

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

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

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

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

The lens at the viewing end of a telescope. The eyepiece is responsible for enlarging the image captured by the instrument. Eyepieces are available in different powers, yielding differing amounts of ...

Domain: Astronomy; Category: Astrometry

The two points at which the Sun crosses the celestial equator in its yearly path in the sky. The equinoxes occur on or near March 21 and September 22. The equinoxes signal the start of the Spring ...

Domain: Astronomy; Category: Astrometry

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