My question is Expanding confusion: Time integral of the reciprocal of the scaling factor from Hubble parameter equation. It was closed for the second time for a different reason - "needing details or clarity." First reason was "off-topic".
UPDATE: I no longer ask how to improve it. I strongly argue that both of these reasons were wrong, because this question is too much for moderators on this forum. This is a complaint and I'm a whistleblower in this situation.