SOLVED. Adult/ YA Sci-Fi. Millionaire/ entrepreneur goes into space w ex-wife & gets sucked into various future periods, w the "cooled"/ still universe towards end. Children in current time-line are displaying advanced knowledge. Read 2000s. Spoilers. [s]

[Ben]

Adult/YA Science-Fiction Millionaire/entrepreneur goes into space with ex-wife and gets sucked into various future periods, with the "cooled"/still universe towards the end. Children in current time-line are displaying advanced knowledge, at one point kept in "camps" where abuse would happen as they were not seen as properly human - eventually develop technology to live in a Moon base. Main child is a girl, (who loses a tooth to abuse?), and there is a mention of a giraffe on the Moon, (the children are tall and lithe due to low gravity so identify with the animal?). Entrepreneur meets array at "end" of universe/time to find that it is a collective of the last human minds - who are sending a signal back in time that alters the "current" children. He makes a decision that sends him back to "now" so timeline could change? I read the book in the 2000s but it may have been published well before then.

English language, paperback book, possibly American/British characters; possibly published in America or U.K.

[Andy]

Sounds like part of Stephen Baxter's Manifold Series, possibly "Manifold: Origin" Manifold: Origin

[Andy]

On the other hand, Manifold: Time has the superintelligent children https://en.wikipedia.org/wiki/Time_(B... ("The Blue Children")

[Ben]

Andy wrote: "On the other hand, Manifold: Time has the superintelligent children https://en.wikipedia.org/wiki/Time_(B... ("The Blue Children")"

Yep, it was Manifold: Time! Thank you!

[Andy]

Great! Glad to help.

[Kris]

Glad you found your book, Ben. Here's the link - Time (Manifold #1) by Stephen Baxter.