A few readers have taken the time to write attempting to correct a line in Chapter 58; specifically, Meagan's comment, "Earthrise over that rim would be spectacular."
They state (correctly) that the Moon is tidally locked to Earth, so it always presents the same face to the planet.
However, they ignore the fact that the Moon's orbit is inclined about 5 degrees to the plane of the Earths orbit, so the position of Earth will appear to vary north and south during the orbital cycle.
Additionally, the Earth will have phases when observed from the Moon, complementary to the lunar phase as seen from Earth, so, during a new moon on Earth, it would be a "full earth" on the Moon.
With Aristarchus Base being north of the crater of the same name (approximately 24 degrees north of the lunar equator), I chose to take some poetic license and make the statement that the Earth will appear to rise and set from that location, assuming there is some obstruction from the rim sufficient to hide or partially hide the Earth from view at some point during the cycle.
If you want to learn more and see some of the inspirational material I used when writing this section, check out: https://www.skyandtelescope.com/astronomy-blogs/explore-night-bob-king/observing-earth-from-the-moon/
Thanks for reading,
-Charlie