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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Some Apollo Moon Samples 'Crumbling to Dust'
September 3rd, 2015
Scientists found that the median particle size in a set of 20 different Apollo soil samples held in laboratories for research use has decreased by more than half since the samples were first measured 40 years ago.
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Forget the 'Supermoon': What's Actually Happening at Lunar Perigee
Full Moon with Airplane
August 26th, 2015
The full moon this Saturday (Aug. 29) will look especially big in the sky, because the moon will be exceptionally close to Earth.
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Rare 'Supermoon' Total Lunar Eclipse Coming This Month
Total Lunar Eclipse of April 2015
September 1st, 2015
The supermoon eclipse, which will grace Earth's skies on Sept. 27, features a full moon that looks considerably larger and brighter than usual. It will be the first such lunar eclipse since 1982, and the last until 2033.
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Fire Fountains of the Ancient Moon Explained
A fire fountain erupts from a crevice in Iceland.
August 24th, 2015
The ancient lunar surface once erupted with geysers of lava — and now, scientists think they know what caused these fiery fountains.
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Radical! Neon Found on the Moon
LADEE Orbiting the Moon
August 18th, 2015
NASA's LADEE spacecraft has made the first-ever detection of neon in the wispy lunar atmosphere, which is properly known as an "exosphere" because it's so thin — about 100 trillion times less dense than that of Earth at sea level.
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Cassini Watches Enceladus Fizz Into Space
Enceladus with Water Vapor Plume
August 31st, 2015
Cassini has once again turned to Enceladus, the enigmatic moon of Saturn.
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No, Mars Won't Be As Big as the Moon in the Sky Tonight
Mars Hoax Image
August 27th, 2015
The "Mars Hoax" has been popping up every Aug. 27 since 2003, when it was born in a widely misinterpreted email. The sender of that message was trying to get people excited about an unusually close approach of Mars to Earth in late August 2003.
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First Ad on the Moon: Lunar Billboard for Pocari Sweat to Fly in 2016
Pocari Sweat 'Time Capsule' on the Moon
August 21st, 2015
Japan-based Otsuka Pharmaceutical Co. aims to launch a special "time capsule" can of its Pocari Sweat sports drink to the moon next year. The can will be delivered to the lunar surface aboard Astrobotic Technology's Griffin lander.
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