Genady

The current hypotheses answer these questions in various ways. As there are no data, no one is more correct than others. If you want to know their answers, you will need to study.

Only if it has support by relating to what we do know about matter, radiation, space and time.

There are several hypotheses regarding what led to the Big Bang, but there are no data yet to test these hypotheses.

Matter and radiation. Mostly radiation. But it was not a "point".

I am sure this Burundi Presidential Palace has cameras all over:

Which island is it? (Maybe I've been there.)

I think the answer is here: The 15 Poorest Countries in the World - WorldAtlas

Free PDF of this book downloadable here: Download PDF - Einstein In Matrix Form: Exact Derivation Of The Theory Of Special And General Relativity Without Tensors [PDF] [561fu48ukqq0] (vdoc.pub)

The main point, to me, is that mathematics has explanatory power. Regarding math vs physics, they are perceived differently on the level where our perceptions are connected to our senses. As we go down the turtle levels, the distinction becomes less evident. I see a possibility that turtles are not all the way down, but rather the last level of turtles is just math. There, the mathematical explanations are the explanations.

As sure as the Sun will set tonight.

Past Performance Is Not Indicative Of Future Results (forbes.com) Mathematics explains perfectly, to my taste, why there are infinitely many prime numbers. Explains, not just describes. It gives me the machinery that makes this set infinite. There are different 'why's. In animal behavior specifically, there are at least these standard four: Tinbergen's four questions - Wikipedia

As @studiot's counterexamples show, these conditions are neither sufficient, nor necessary.

Yes. Is it true though that all these wormholes and time cycles require sorts of exotic materials about existence of which GR has nothing to say?

Like this: the Sun will become a red giant, then it will blow most of its material away, then it will become a white dwarf and will stay in that form for many billions of years.

In my case, I knew too well where it is. That made me answer incorrectly.

It does not follow from this, that "with speculation, there is a good and original observation." It does not follow from this, that "with a bold conjecture, a great discovery will be made."

I've answered that one correctly, because I don't know much about formal grammar. So, I thought about the term, preposition. It has position in it. Aha, said I, it has something to do with space and time.

No, they will not. Each one will live 80 years in their own time, technically called 'proper time'. If they mind their own business instead of comparing to other people times, they don't experience anything unusual.

Mathematics IS machinery, but a tricky one. It does not show why the things are the way they are. Instead, it shows why they could not be different.

@studiot St. Petersburg is 300 E and should've been 2 hours ahead of GMT if they went by 150 longitude. That was my answer on the quiz, 2 o'clock. Wrong! Their answer was 3 o'clock. It's neither time zone, nor astronomical difference. Did you notice your misattribution of the quote above?

This quote is not from me:

Did I say something about parallels?

edit: x-posted with John Cuthber

I wonder what time they referred to in 1859. The worldwide hourly time zones were established much later.