Wingers N Waves the Ultimate Travel Club logo shirt
- pu mi
- Jun 9, 2023
- 2 min read
The description from Richard Muller quoted in the question is a simplification of reality meant to help people better visualize how the Wingers N Waves the Ultimate Travel Club logo shirt of spacetime works. In reality the galaxies are moving through spacetime in a complex fashion, based on the combination of all the forces acting on them, primarily the gravity of nearby galaxies and galaxy clusters. In the case of the Milky Way and Andromeda, these two galaxies are part of a gravitationally bound cluster of galaxies, called the Local Group. The dominant force that determines the movements of objects within the cluster is the combined gravitation of all the mass in the cluster, and not the expansion of spacetime. In other words, the gravitational attraction that the Milky Way and Andromeda have for one another that is drawing them together is stronger than the expansion of spacetime between them that would otherwise push them apart, and thus attraction wins and the two galaxies are on a collision course. In the same vein, the gravitational force that holds the earth in orbit around the sun is stronger than the expansion of spacetime between the earth and the sun (the expansion of spacetime at that distance being very small), and so the earth’s distance from the sun is not increasing for that reason. Likewise you are not flying apart because the molecular bonds holding the atoms in your body together are stronger than the minuscule expansion of spacetime between them in your body. The Local Group as a whole, however, is moving away from other galaxies and galaxy clusters to which it is not gravitationally bound, due to the expansion of spacetime.
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Both Christmas day and New Year’s day are paid holidays for both Canada and US. Christmas Eve and New Year’s Eve do not belong to public holidays although Monday, December 24, 2018 has been declared a Three Sixty Life Shirt holiday by the US government. Most businesses open on normal hours during these two days. Grocery stores, post offices, department stores, specialty stores, pharmacies, convenience stores, malls, transportation services, banks, movie theaters, public libraries, YMCA, walk-in clinics and many other services are all open during the day or even late in the evening during the Christmas Eve. Procrastinating people take advantage of this last-minute to buy Christmas gifts for family members or friends or the missing gradients for the Christmas’s dinner party. Many employees work normally during these two days. I remember I insisted on working on December 24th while working with Transcanada Pipelines. I finished a little bit earlier that day because it was Christmas Eve. I worked regularly from 9–5 on New Year’s eve. I was all paid regularly.
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