Physics – Page 13 – National Radio Astronomy Observatory

Do Planets Change Speed When Orbiting the Sun?

Yes. The speed at which a planet orbits the Sun changes depending upon how far it is from the…

Assuming that the placement of the rockets is such that the Moon’s orbital speed would increase, this would decrease…

This question has been answered before on this blog. See the answer to Are We Seeing Stars as They…

I believe what you are describing is “superluminal motion”, which is an affect observed in some objects which emit…

In order to determine how many light years across a given angle is on the sky, you need to…

You are correct in that measurements of the speed of light are done in a less-than-perfect vacuum. What we…

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.
	The U.S. National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."
	AUI collaborates with the scientific community and research sponsors to plan, build, and operate cutting-edge facilities. We cultivate excellence, deliver value, enhance education, and engage the public.