Time travel via a spaceship that got too close to an uncharted black hole. Our hero, Caleb Hornblower, survives to have a romance with Liberty Stone, a woman from a couple hundred years before he was born. The romantic element is definitely stronger than the science, but there are some interesting discussions about past versus future technology and different social norms. There’s also a fun ride on an aircycle! And a bit of comedy when Liberty’s parents arrive unexpectedly. But only the one time travel event is documented, so this remains heavier on the Romance than the Time Travel.

The story continues in a 1990 sequel, Times Change.

Jacob (J.T.) Hornblower, astrophysicist, deliberately travels back a couple of centuries to shake some sense into his brother Caleb, who had foolishly (in J.T.’s opinion) decided to stay in the past. A little more science than the first book in this duology, but still heavier on the romance angle, as J.T. finds himself strongly attracted to Sunbeam (Sunny) Stone. Both J.T. and Sunny are opinionated and bullheaded, as well as having blackbelts, so there is also more conflict in this book. The documented return trip to the future includes a brief description of physical side-effects.