What's on the Far Side of the Moon?

Live Science | 4/25/2019 | Staff
Frost123 (Posted by) Level 3
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Looking up at the silvery orb of the Moon, you might recognize familiar shadows and shapes on its face from one night to the next. You see the same view of the Moon our early ancestors did as it lighted their way after sundown.

Only one side of the spherical Moon is ever visible from Earth — it wasn't until 1959 when the Soviet Spacecraft Luna 3 orbited the Moon and sent pictures home that human beings were able to see the "far side" of the Moon for the first time.

Phenomenon - Locking - View - Earth - Moon

A phenomenon called tidal locking is responsible for the consistent view. The Earth and its Moon are in close proximity and thus exert significant gravitational forces on each other. These tidal forces slow the rotations of both bodies. They locked the Moon's rotation in sync with its orbital period relatively soon after it formed — as a product of a collision between a Mars-sized object and the proto-Earth, 100 million years after the solar system coalesced.

The first image of the moon’s far side (shown here) was captured by the Luna 3 probe in 1959.

Moon - Trip - Earth - Amount - Time

Now the Moon takes one trip around the Earth in the same amount of time it takes to make one rotation around its own axis: about 28 days. From Earth, we always see the same face of the Moon; from the Moon, the Earth stands still in the sky.

The near side of the Moon is well studied because we can see it. The astronauts landed on the near side of the Moon so they could communicate with NASA here on Earth. All of the samples from the Apollo missions are from the near side.

Side - Moon - Vantage - Point - Respect

Although the far side of the Moon isn't visible from our vantage point, and with all due respect to Pink Floyd, it is not accurate...
(Excerpt) Read more at: Live Science
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