Glossary of Radio Astronomy Terms

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Glossary of Radio Astronomy Terms

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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 U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
	Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.
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