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Cosmology

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The Kerfuffle Over Non-Cosmological Quasar Redshifts

Question:  Some years ago I read an article that said (if I recall correctly) that there were quasars that…

How Do Astronomers Study How Things Evolve?

Question:  We know that stars and galaxies we see are just fossil light as they were millions or billions…

What is a Fairly Representative Radio Astronomy Project?

Question:  What is a fairly representative project a radio astronomer might be involved with perhaps to investigate dark energy…

Dark Matter and the Stuff Humans are Made of

Question:  If dark matter does not emit or reflect any kind of light, (As I have heard from Neil…

What is the Universe Expanding Into?

Question:  Thank you for helping so many people. Is there an educated guess by professionals about the difference between…

Optical and Radio Measurements of the Gravitational Bending of Light Around the Sun

Question:  VLBA measurements have been used to confirm gravitational bending of radio waves by the Sun in confirmation of…

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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.
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