Question 1
Which planet rotates the opposite direction it revolves around the Sun?
◦ Venus
◦ Mercury
◦ Mars
◦ Earth
Question 2
Both Earth's Moon and Mars have thick layers of loose surface materials. How are they different?
◦ They are different. Lunar regolith is mostly ejecta from impacts whereas Martian regolith is primarily wind-blown dust and sand on older surfaces that vary from water laid surfaces to volcanic surfaces.
◦ They are not different. Both have surfaces that are remnant soils from a period when they had water on the surface.
◦ They are not different. They are both comprised primarily of ejecta from impacts that accumulates on the surface.
◦ They are different. Lunar regolith is mostly ejecta from impacts, whereas Martian soil is more earthlike with classic soils developed by weathering of rock.
surface of a crimson clove
Mars Rover Curiosity
Moon orbit
Saturn as Seen from Earth
Heaven or earth?
Precession: Earth’s axis rotates, or “wobbles”