Astronomy Day 5 Orbital properties, Physical properties, Surface features, Rotational rate, Crater creation, Dust, Ice, Volcanoes, Interior, Origin.

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Presentation transcript:

Astronomy Day 5 Orbital properties, Physical properties, Surface features, Rotational rate, Crater creation, Dust, Ice, Volcanoes, Interior, Origin

Orbit is only about 384,000 kilometers from Earth. a. Pretty close in space terms b. Most people will drive that far in their lifetimes c. Little over a second for light Seen more during the night, from Earth. Why?

Lunar Surface Maria Highlands

How was the moon even made?

What about gravity on the moon?

What is the density of the moon, when compared to Earth?

Near side Evidence of heavy impacts, large Maria Far side Evidence of heavy impacts, little Maria, more evidence of cratering activity.

Why would the “near side” be covered in Maria, and the “far side” be mostly cratered highlands?

Much current thinking is that in the early formation of the moon, the gravitational pull of Earth caused the Moon’s small core to pull “this way”. The crust would be thinner, and the crust would be more apt to shatter during meteor impacts.

Fate has ordained that the men who went to the moon to explore in peace will stay on the moon to rest in peace. These brave men, Neil Armstrong and Edwin Aldrin, know that there is no hope for their recovery. But they also know that there is hope for mankind in their sacrifice. These two men are laying down their lives in mankind’s most noble goal: the search for truth and understanding. They will be mourned by their families and friends; they will be mourned by their nation; they will be mourned by the people of the world; they will be mourned by a Mother Earth that dared send two of her sons into the unknown. In their exploration, they stirred the people of the world to feel as one: in their sacrifice, they bind more tightly the brotherhood of man. In ancient days, men looked at stars and saw their heroes in the constellations. In modern times, we do much the same, but our heroes are epic men of flesh and blood. Others will follow, and surely find their way home. Man’s search will not be denied. But these men were the first, and they will remain the foremost in our hearts. For every human being who looks up at the moon in the nights to come will know that there is some corner of another world that is forever mankind.

Terminator

Mass (kg) crater depth (cm) crater diameter (cm) notes to self Height (m) .005 .5 .5 3.5 This class is so bogus !!

Crater Depth, Crater Diameter