Birth of the Moon
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Scientists have been reconstructing the history of the moon by scouring its surface, mapping its mountains and craters, and probing its interior. What are they learning about our own planet's beginnings? Decades ago, we sent astronauts to the moon as a symbol of confidence in the face of the great cold war struggle. Landing on the moon was a giant leap for mankind. But it's what the astronauts picked up from the lunar surface that may turn out to be Apollo's greatest legacy. When the astronauts of Apollo stepped out of their landing craft, they entered a world draped in fine sticky dust, strewn with rocks, and pocked with craters. They walked and rambled about, picking up rocks that they packed for the return flight. Back in earth-bound labs, scientists went to work probing the rocks for clues to one of the most vexing questions in all of science. Where did the moon come from? The answer promised to shed light on an even grander question. Where did Earth come from? And how did it evolve into the planet we know today? The nature of the moon began to come into focus four centuries ago. Galileo Galilei had heard of an instrument built by Dutch opticians capable of "seeing faraway things as though nearby." Galileo, in many ways the first modern scientist, saw this new instrument as a tool to help settle a long standing question. What was the nature of the heavens, and how did the world of men fit within it? To some philosophers, the moon was a perfect, crystalline sphere of divine substance, free of Earth's imperfections. Galileo, with his telescope, saw a more familiar reality. He noted mountains and valleys on the moon, features like those of Earth. The astronauts of Apollo lifted off on a series of missions to get a close up look at the moon and perhaps settle the debate. Because there's no atmosphere there, the astronauts entered landscapes that are nearly frozen in time. They could scour the lunar surface for evidence of events going back almost to the time of its birth. Indeed, eons of impacts had opened up the Moon's interior, leaving a wealth of information strewn about their landing sites. Scientists had already noticed that some large old craters were surrounded by concentric rings. You can see one of the most pronounced examples in this image of the Mare Orientale, captured recently by NASA's Lunar Reconnaissance Orbiter, or LRO. The colors show differences in elevation. The old view was that the impact had melted the rock below. A newer view held that the impactor had actually splashed down on a molten surface. That gave rise to the radical notion that, early in its history, the moon's surface was covered in a vast ocean of magma. When the astronauts arrived, they found relatively light rocks known as anorthosites. Their presence suggested that heavier material had sunk toward the moon's interior, forcing lighter material to the surface. The rocks they brought back were found to be strikingly similar to those on Earth, in part because they share forms of oxygen, called isotopes, that scientists regard as "blood types" for solar system bodies. Then there was this. The moon appeared to be completely, utterly, dry, with no evidence that water was ever present on its surface.
Comments
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سبحان الله! القرآن قالها في سورة الإسراء 12 (فمحونا اية الليل)
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I'm no smart person but here is my theory. Many planets have moons, can't deny it. Ones got 62. Ever thought one of those moons got pulled by earths gravitational pull and eventually caught its orbit? However I can prove my own theory wrong. Theia,
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do you guys see the rabbit on the moon
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made for general public with little care for accuracy or scientific language
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"and probing its interior regions"
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god make the moon of course
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Our God create all .
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I liked the soundtrack 😂
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Sydney just to confirm the date and location of your own review for a few weeks. also I am not a problem with my family and friends
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moon
tryu57 -
Hurricane
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Some are right and some are wrong. The moon was made by a big explosion, actually a collision between Earth and Theia. Theia was a planet that collided with earth at the time there was no life and no water on this planet. Theia used to orbit between venus and earth, but it orbited in an oval and it went all the way out to earth's orbit. Theia hit Earth in the top middle, and an explosion happened. Lots of Fragments that went into Earth the second it came out and there was one fragment that was moon, that orbited earth in an oval. Theia was just a little smaller than earth, so the mass of earth increased. Note: This is only what I've heard from the documentaries I've watched on National Geographic Channel.
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not agree
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I always think what if the moon didn't come from earth that it's a dead dwarf planet that froze because it was stuck behind earth before it started to orbit
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MOON :)
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wow those are realy clear OLD videos of the eagle touch down on the moon..cool
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i still don't understand why we just don't blast the moon out of the sky with nukes.
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I think the Earth and Moon were formed in a gigantic collision, as Bill Hartmann postulates, but not a collision between two similar bodies. While the proto-earth was a hot, rocky sphere spinning rapidly, in an inner orbit of the Sun, the "groom" of this marriage was an immense ice planet from the edge of the solar accretion disk, where water formed, early in solar history. This planet formed around a small iron core, kicked out of the inner accretion disk before proto-earth existed. The outer layers of proto-earth had cooled when the ice planet was sent back by another collision towards the center of the Solar System, and struck proto-earth. Amphibolites and banded iron formations discovered at Hudson Bay, Canada, were formed during the impact of the two bodies. The melting ice tempered the energy of impact so the small iron core of the wandering ice planet "bounced" off the proto-earth, depositing magnetite fragments onto the Earth. The magnetic North Pole is the actual spot where two celestial bodies consummated the Miracle of Creation! Oceans and an atmosphere formed quickly. Plate tectonics are the result of the impact- the Earth cracked like an egg and the oceans prevent it from solidifying. The iron core bounced into near orbit and gathered up debris, mostly chunks of mantle. The collision did not vaporize the proto-earth, but it did loosen its shell of solid rock, which allowed the Earth's iron core to spin freely, creating a magnetic field that shields us from cosmic radiation. Even the tilted axis of Earth's rotation can be explained by my scenario. Mother Earth and Father Moon are the most perfect marriage in the Universe!
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Great educational video!
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ummm...God mad everything you noobs I know some people don't believe because their not Muslims... well I am a Muslim I call God "allah"
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