Base ten

"As a girl Jillian Greer was taught that the sky is the limit. But she dreams of going even farther into space. Becoming an astrophysicist, she and her research partner, Kera, invent a way of "masking stars" so that planets can be seen revolving around them. The pair of brilliant astronomers seems destined to become astronauts. But Jillian falls in love with Jack, an ambitious doctor, they have two children, and she takes a giant step off the path to her dream." "At the dawn of the new millennium, Kera trains in a space simulator, while Jillian packs lunches and helps with homework. Knowing NASA won't hire astronauts older than forty, thirty-nine-year-old Jillian abandons her family in Ann Arbor for a ten-day solo trip into the northern Michigan wilderness. She plans to stop at the lighthouse that inspired her most profound scientific insight, but will it inspire her to reach for the stars a second time?"--Jacket.