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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Latest Articles

Arctic Crater Preps New Astronaut for Space
Canadian Astronaut Jeremy Hansen
July 27th, 2015
An Arctic crater holds promise for figuring out how to spot something interesting on the moon or Mars, an astronaut says.
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Moon Meets Beautiful Hyades Star Cluster Sunday Morning
Region Around Hyades Star Cluster
July 10th, 2015
A pre-dawn celestial pageant well worth getting up early to see will take place Sunday morning (July 12), with a lovely crescent moon in close proximity to one of the most beautiful star clusters.
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Beautiful Photo of New Moon Evokes 'Star Wars' Cloud City
New Moon Over Clouds
July 29th, 2015
Photographers in La Palma, Spain, captured this sliver of moon over a cloud landscape that evokes Cloud City on the planet Bespin, a floating metropolis from "Star Wars: The Empire Strikes Back."
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NASA Funds Titan Submarine, Other Far-Out Space Exploration Ideas
NIAC Phase 2 Proposals, 2015
July 15th, 2015
NASA has just funded seven far-out space-exploration concepts, including a submarine that would explore the hydrocarbon seas of Saturn's huge moon Titan, an origami energy reflector and rapid space transit with an electric sail.
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Space Station Crosses Moon's Face in Stunning New Photo
international space station transit
July 9th, 2015
As the International Space Station (ISS) zoomed over Australia on June 30, Dylan O'Donnell captured this amazing view of the orbiting lab crossing in front of the moon.
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How to See Venus, Saturn, Jupiter & Mercury in July's Night Sky
Saturn in July 2015
July 1st, 2015
July offers opportunities to see Venus, Saturn, Jupiter and Mercury overhead. Here's how, and when, to spot them.
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How Robots Could Build a Radio Telescope on Far Side of the Moon
Radio Telescope Array
July 29th, 2015
Researchers are making strides on a radio telescope array that would be unfurled on the farside of the moon by an unmanned rover operated by astronauts hovering nearby at a gravitationally stable point in space.
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See Venus at Its Most Brilliant Tonight
Brilliant Venus, July 10, 2015
July 10th, 2015
Venus is putting on a show for skywatchers throughout July. Tonight (July 10), Earth's "sister planet" will be at its most luminous, blazing brightly in the western sky.
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Do Moon's 'Time Capsules' Hold Secrets to Early Earth?
Earth from the moon
July 8th, 2015
The moon doesn’t have the winds, rivers or plate tectonics capable of erasing these marks of ancient impacts.
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