Glossary of Radio Astronomy Terms

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Glossary of Radio Astronomy Terms

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List of Terms

Year:

The time taken by the Earth to complete one revolution around the sun. This is equivalent to 365.2425 days

Yellow Dwarf:

A star such as the Sun that sits at a stable point in its evolution.

Years ago:

Astronomers often refer to the date of an astronomical event as the date it was witnessed on Earth, even though the object is many thousands or millions of light-years away, taking that long for the light to reach us. This is concept called “Look Back Time.”

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The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
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