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How many grandfathers do you have?

How many grandfathers do you have? That would, of course, include all levels of grandfather. I have an inkling, but I would rather see what others would do to figure out an answer.
John Deethardt, 55+ U.S.

John F. Deethardt II

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Is temperature of molecule function of its kinetic energy?

Is temperature of molecule function of its kinetic energy? If so how is it manifested in terms of atomic structure? If transfer is by photons what motivating factor between a cold and a hot provokes an exchange of force carriers? When do photons activate the atomic electron energy level structure in preference to affecting so called “vibrational” energy? When do they affect the nucleus? What determines the total energy content of atomic particles?
Robin Draper from Kent (Aged 55+)

Long rods and the speed of light

My question is regarding the speed of light. When one end of a rod is struck, how long does it take before the other end moves? Presumably there is a delay, but what would happen if this rod was a light year in length – would it be a year (or more, or less) before the other end moved?
R Lindeck from West Sussex (Aged 55+)

How many large objects have been identified in the universe?

How many large objects (stars or planets / solid or gas) have been identified in the universe, so far and are there estimates about how many more will be discovered in the next 100 years? Is it known / acknowledged that the universe is expanding continuously and that there are an infinite number of large objects?
Peter Hayhurst from Cheshire (Aged 55+)

Is it possible that anti-matter exhibits anti-gravity?

Is it possible that anti-matter exhibits anti-gravity? If so could this explain why it is so scarce? Imagine at the creation of the universe all the anti-matter would be at the edge of the universe because it would not be restrained by the force of gravity.
R Lindeck from West Sussex (Aged 55+)

How many light years is earth (approx) from where the big bang occurred?

How many light years is earth (approx) from where the big bang occurred?
CA Merritt from West Sussex (Aged 55+)

What depth of snow equates to 25mm of rain?

What depth of snow equates to 25mm of rain?
David Watton from west midlands (Aged 55+)