 A study
of the closest planet to the sun provides young readers with the most up-to-date
information about the airless surface of Mercury, where the day-to-night temperature
change is more than one thousand degrees. |
| A study
of the closest planet to the sun provides young readers with the most up-to-date
information about the airless surface of Mercury, where the day-to-night temperature
change is more than one thousand degrees. |