Constellation | Define Constellation at Dictionary.com.

Astronomy Meaning and Example Sentence: Meaning, definition.

radio astronomy - Science Definition.
Star definition, any of the heavenly bodies, except the moon, appearing as fixed luminous. Astronomy. any of the large, self-luminous, heavenly bodies, as the sun, Polaris, etc. 3. .. 10. prison slang a convict serving his first prison sentence.
a unit of length, equal to the mean distance of the earth from the sun: approximately 93 million miles (150 million km). Abbreviation: AU.
radio astronomy science definition. See in a sentence. The study of celestial objects by measurement of the radio waves they emit. Radio astronomy has.
Definition: An Astronomical Unit is the mean distance between the Earth and the Sun. In 2012, the Interational Astronomical Union defined the distance to be.
astronomy | Define astronomy at Dictionary.com.
Star definition, any of the heavenly bodies, except the moon, appearing as fixed luminous. Astronomy. any of the large, self-luminous, heavenly bodies, as the sun, Polaris, etc. 3. .. 10. prison slang a convict serving his first prison sentence.

Astronomical unit | Define Astronomical unit at Dictionary.com.
Astronomer | Easy to understand definition of astronomer by Your.

Astronomical unit - Wikipedia, the free encyclopedia.

astronomer definition sentence

astronomical unit - Science Definition.

astronomer definition sentence

Revolution | Define Revolution at Dictionary.com.