Recent content by twr

I read in an article from space.com the following: "In an open, flat universe, the photons, left undisturbed, would travel along their parallel courses without ever interacting." I think that is not correct. The universe can be flat and closed nevertheless and the parallel course of photons...

If you don't mean "climate blabla" that's a good question. The upper atmosphere is very fragile and I am hesitating to favor "space tourism". World tourism up to FL400 is enough. If you think of "climate change", this is nonsense. There is no possibility for mankind to change the climate and...

It's a fact that launching 10 Starships to get ONE mission is a gambling game (and Musk is a gambler). Provided the reliability of the moon mission has to be as low as 99,5%, each rocket must have a reliability of 99,995% . I don't know ONE type of rocket of such a reliability. I wouldn't bet...

I found the article of a "climate study" emphasising "that we need to be patient when it comes to emissions mitigation". This is a typical example of the "guru-climate science". When the theory doesn't fit with the reality you adapt your theory so that it is valid again. Physicist call such...

Sorry but this is not a theory. A theory must be falsifiable. You can't falsify such claims. It is a mental game but not more.

1. Yeah, it's not. Because it is not a planet or cannot be shaped like a planet. 2. Freed from objects of the same proportions. 3. What means "potentially"? In the great time lapse it must have swallowed the objects or thrown them out of the orbit. 4. First of all the definition is valid for...

I personally do not like the light / sound comparison. Because the sound waves has a medium to be transported but light has not! And sound become slower when the train moves away. But light is as fast as it is whether static or moving.

Pluto is not a planet but a planetoid. That means it has enough mass and gravity force to be round but its orbit is not "wipe out" from other bodies. The community was annoyed that Plutons wasn't a planet anymore. Especially the US community because this "planet" was the only one discovered by...