Cheela Series by Robert L. Forward

"In science fiction there is only a handful of books that stretch the mind--and this is one of them."--Arthur C. Clarke In a moving story of sacrifice and triumph, human scientists establish a relationship with intelligent lifeforms--the cheela--living on Dragon's Egg, a neutron star where one Earth hour is equivalent to hundreds of their years. The cheela culturally evolve from savagery to the discovery of science, and for a brief time, men are their diligent teachers... more"In science fiction there is only a handful of books that stretch the mind--and this is one of them."--Arthur C. Clarke In a moving story of sacrifice and triumph, human scientists establish a relationship with intelligent lifeforms--the cheela--living on Dragon's Egg, a neutron star where one Earth hour is equivalent to hundreds of their years. The cheela culturally evolve from savagery to the discovery of science, and for a brief time, men are their diligent teachers.Praise for Dragon's Egg"Bob Forward writes in the tradition of Hal Clement's Mission of Gravity and carries it a giant step (how else?) forward."--Isaac Asimov "Dragon's Egg is superb. I couldn't have written it; it required too much real physics."--Larry Niven "This is one for the real science-fiction fan."--Frank Herbert"Robert L. Forward tells a good story and asks a profound question. If we run into a race of creatures who live a hundred years while we live an hour, what can they say to us or we to them?"--Freeman J. Dyson"Forward has impeccable scientific credentials, and . . . big, original, speculative ideas."--The Washington Post less

Starquake, the sequel to Dragons Egg, takes place on the surface of a neutron star. The gravity is 67 billion Earth gravities. The native cheela, the size of sesame seeds, live a million times faster than their human friends in orbit. After a starquake, the humans have only one day to save the remains of cheela civilization from extinction.

Only the cheela can survive on Dragon's Egg, a neutron star with surface gravity sixty-seven billion times that of earth's--but when a monstrous starquake strikes, human astronauts must abandon them or die saving the cheela from extinction. Reissue.