What is the name of this book

[PattayaPete]

I read a book (or maybe a short story) many years ago.

The premise was a race of aliens that actually lived inside a star. They had incredibly short life spans but lived in a speeded up world. The story revolved around humans trying to study this race and the huge difference in time spans for each race.

I've had a sudden hankering to read it again but I can't remember the author or the name of the book.

Anyone know it?

[Chuffalump]

Depending on how accurate your recollection is.......

Flux by Stephen Baxter?

Not aliens, modified humans living on a neutron star, living at extreme speed.

[B5B7]

This sounds like Robert Forward's classic novel Dragon's Egg, which also has a sequel Starquake.
If you like this you might also like Hal Clement's novels, such as Mission of Gravity.

[PattayaPete]

Dragon's Egg is the one. Thanks for the replies. I am looking forward to reading it again after 20 years.

Flux is a different story along similar lines by the sound of it. I'll check that out as well.