Earth Sciences 1086F/G Chapter 9: Chapter 9
5 Aug 2020
School
Department
Course
Professor
Document Summary
Why is it hard for us to view mercury"s surface: because it always stays in the same region of the sky as then sun and it never gets closer than 80million km. It has cliffs which are hundreds of km long. Moon has the imbrium basin, caloris basin is on mercury. Mercury lacks dark grey lava plains so obvious on the moon. What mission/craft provided us with the most information about mercury: messenger. Which is longer, a day or a year on mercury: a day on mercury (176 earth days) is longer than a year (88 earth days) one day on. Mercury (i. e -the time it takes to rotate around its axis once) lasts 176 earth days. A year on mercury (i. e the amount of time for mercury to orbit the sun once) is 87. 97 earth days. In that sense, it remains daytime for a full year on mercury and it stays night for one full year also.
