Thanks a lot for the response! There's a lot here for me to think about.
Disclaimer - I am not a physicist, nor do I have any deep understanding of space-time, relativity or orbital mechanics. This thread was started simply out of a place of curiosity.
The thought experiment goes like this:
- Since the universe is expanding everywhere at the same time, is it possible to stay completely and relativistically still?
- Since our earth is orbiting around the sun, and the sun is affected by the gravitational effects of the larger galactic arm, and the galaxy has some relativistic vector through the universe, what is the vector of the Earth? More concisely, if we want to ignore direction, at what speed is Earth moving relative to absolute zero?
- Would we observe time dilation of natural physical objects in the universe that are experiencing vast velocities relative to us?
Kind of a mouthful of questions, but I just wonder how physicists take into account these variables when calculating trajectories within our own solar system.
@yvonm Thank you for the time you put in to this detailed response. These were indeed the videos I was remembering. I must have been on a science and engineering binge with the SFIA videos thrown into the mix. Now that you mention force-transfer I feel as if I've gone back to step 1 in understanding how all of this works. Thanks again! These are very good things for me to go look in to.
I thought I remember a video where Isaac discusses concerns with mobility while in spin gravity. For example, there was an example about throwing a ball in the direction that the rotating platform is spinning that would cause the ball to "fall" up or down, but I cannot remember. I am not well studied in physics and would like a refresher on these forces and was hoping someone could point me to the video and/or other topics like this to help me learn more.