by Dr. Jason Lisle | Jul 13, 2024 | Physics, Refuting the Critics
Did Phillip Dennis actually disprove the conventionality thesis (Dennis 2024)? Did he really prove at long last what physicists over the last century have been unable to do – to establish that the one-way speed of light in any given direction must be the same as the round-trip speed of light? Did he find any genuine inconsistency with the Anisotropic Synchrony Convention (ASC) and the young universe model upon which it is based? Well, no to all of the above…. We show below that when the full synchrony-independent equations are used, they do not support Dennis’s conclusion but rather the opposite. Furthermore, we will demonstrate several critical errors in Dennis’s analysis and show that several of his claims are incompatible with the physics of relativity.
by Dr. Jason Lisle | Jun 14, 2024 | Astronomy
Stars often exist as binary pairs – two or more stars that orbit their common center of mass. However, even larger numbers of stars can exist in close proximity to each other – a star cluster – which can consist of hundreds to hundreds of thousands of stars. Single stars, binaries, and star clusters exist as part of a much larger structure – a galaxy – which can contain millions to trillions of stars. Furthermore, the composition of stars varies slightly in a way that depends on where they are found.
by Dr. Jason Lisle | May 31, 2024 | Astronomy
In the previous article, we examined white dwarfs and neutron stars, objects with the mass of a star compressed into a very small volume. Some of these objects could be what remains of a star that has collapsed in on itself. But what happens when mass is compressed into an even smaller volume?
by Dr. Jason Lisle | May 10, 2024 | Astronomy
In a star, the outward flow of energy generated by nuclear fusion in the core balances the inward pull of gravity. Without such fusion, a star would collapse into a very small volume. And indeed, the universe contains objects with a mass comparable to that of a star, but with a size comparable to the Earth. These are called white dwarfs.
by Dr. Jason Lisle | Apr 12, 2024 | Astronomy
How do stars change over time? In parts 3 and 4, we discussed some of the scenarios secular astronomers have proposed for stellar evolution. These included the now-discredited idea that stars evolve along the main sequence from blue to red, along with modern ideas of giants and supergiants being aged stars. Unfortunately, such long-term changes cannot be observed and therefore are beyond the scope of operational science. Nonetheless, some stars change in ways that have been observed in history, and some types of changes are even observable in the present. In particular, stars can change in luminosity, appearing either brighter or fainter over time. These are called variable stars.
