Categories
astronomy Physics

Aberration of starlight and the one-way speed of light

272px-Simple_stellar_aberration_diagram.svg
“Simple stellar aberration diagram” by BlankAxolotl – inkscape. Licensed under CC BY-SA 3.0 via Wikipedia

The aberration of starlight (also called stellar aberration) is an astronomical phenomenon which produces an apparent motion of stars about their locations dependent on the velocity of the observer. Aberration causes objects to appear to be angled or tilted towards the direction of motion of the observer compared to when the observer is stationary. The change in angle is very small, and specified by the ratio of v/c where c is the canonical speed of light and v the velocity of the observer. With annual stellar aberration, the apparent change in the position of a star varies as observed by an Earth observer periodically over a year as the Earth’s velocity changes as it revolves around the Sun, with a maximum angle of about 20 arc-seconds in right ascension or declination. It traces a small ellipse on the sky over that time.

The fact of stellar aberration, which has been explained by a constant speed of light c, has been used by some to “refute” the idea of an infinite one-way speed of light in Lisle’s ASC model. The claim is that aberration would not occur at all if the one-way incoming speed of light was infinite, thus v/c = 0, here.  Dr Jason Lisle responds to this claim.


Categories
Cosmology Creation/evolution Physics

Starlight travel time in the Universe

This is a video segment, with added text subtitling, taken from the documentary film “The Heavens Declare” Part 2 where in I describe the new physics of how light from the most distant galaxies could have reached Earth in just 24 hours during the Creation by God 6000 years ago. My model is based on Carmeli’s cosmology and where the Universe was rapidly stretched out by the Creator on Day 4 of Creation week when He made the stars and galaxies. This provides a solution to the creationist light-travel-time problem.