Misc: ghosts appear in 4 shakespearian plays;---------- , richard iii, hamlet and macbeth?

Questions

earth's atmosphere is, proportionally, thinner than the skin of an----------?

a day on ---------- is about 9 hours, 50 minutes, 30 seconds at the equator?

driving at ---------- miles per hour, it would take 258 days to drive around one of saturn's rings?

driving at 75 miles per hour, it would take ---------- days to drive around one of saturn's rings?

driving at 75 miles per hour, it would take 258 days to drive around one of ---------- 's rings?