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Galaxies

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The Andromeda Galaxy’s Orientation Relative to Us

Question: Do you know if there is current agreement about which edge of the Andromeda galaxy (M31) is closest…

Can a Black Hole Swallow a Galaxy?

Question:  I know that black holes are very dense and their gravitational pull is so strong no one really…

The Solar System’s Rotation About the Center of the Milky Way

Question:  I have a question about galaxies, how do scientist know about the galactic year and how long it…

The Properties of Spiral Galaxies, Including Our Own

Question:  Me and the rest of our fifth grade class is learning about galaxies, but I have a couple…

Relative Sizes of the Earth and the Milky Way Galaxy

Question:  Hi, I just want someone to verify my math –needed to visualize the scale of the galaxy. I…

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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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