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Category Archives: May 2026
The velocity calculations using frequency shift are not accurate
by William H Davis Why do the text books give different redshift equations for the observer stationary versus the observer in motion? Why do we use the equation for the observer stationary when the Earth is clearly moving through space … Continue reading
Posted in May 2026, Sidereal Times
Tagged blueshift, davis, frequency, frequency shift, planck, redshift, relativity, velocity, William H Davis
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Snippets
compiled by Arlene & David Kaplan Telling Time on Other Worlds From Earth orbit to the Moon and Mars, explore the world of human spaceflight with NASA each week on the official podcast of the Johnson Space Center in Houston, Texas. … Continue reading
Amateur Astronomers Association of Princeton 