Earth's Moon: Formation, Composition and Orbit

Scientists say a giant impact knocked off the raw ingredients for the moon off the primitive molten Earth and into orbit.
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Spot the Awe-Inspiring Andromeda Galaxy in the Autumn Night Sky
The Andromeda Galaxy (M31)
November 28th, 2015
Here's how to see the huge Andromeda galaxy, which is visible with the naked eye in the night sky despite being 2.5 million light-years away.
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Leonid Meteor Shower Peaks Overnight Tonight: What to Expect
2012 Leonid Meteor Over Connecticut
November 17th, 2015
The famous Leonid meteor shower will peak early Wednesday morning (Nov. 18), but this year's display probably won't be spectacular.
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Massive Rocks May Explain Moon's Mysterious Tilt
Gravitational interactions of small bodies with the Earth-Moon system shortly after its formation.
November 25th, 2015
The mysterious tilt of the moon's orbit is due to gravitational tugs it received from giant, close-passing rocks that later slammed into the Earth, researchers say.
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Famous Leonid Meteor Shower Peaks This Week
2012 Leonid Meteors
November 16th, 2015
The Leonid meteor shower will peak overnight Tuesday into Wednesday, giving skywatchers the chance to see some brilliant "shooting stars." The Leonids have put on amazing displays in the past, but this year's show will likely be on the subdued side.
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Will Private Moon Race's First Contract Spur Snowball Effect?
SpaceIL's Lunar Lander
November 4th, 2015
Last month, Israel-based SpaceIL announced it had signed a deal to launch its lander to the moon aboard a SpaceX Falcon 9 rocket in the second half of 2017.
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Moon's Shattered Crust Could Shed Light on Earth Life's Origins
Moon Fractured Crust
October 19th, 2015
Some parts of the moon were so hammered by small asteroids 4 billion years ago that the impacts shattered the upper crust there. Similar impacts on Earth during this same era may have carved out environments in which life first took root.
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New Space Mining Legislation Is 'History in the Making'
Planetary Resources Asteroid Mining
November 20th, 2015
Congress' passage of a bill that allows American companies to own and sell any materials they extract from the moon, asteroids or other celestial bodies should help spur the development of off-Earth mining, representatives of the nascent industry say.
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