Earth Moon

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Science Education Videos (NASA Goddard Space Flight Center, YouTube Playlist)
NASA Goddard Space Flight Center (Official Website)


Moon : the earth’s natural satellite (see satellite 2a) that shines by the sun’s reflected light, revolves about the earth from west to east in about 291⁄2 days with reference to the sun or about 271⁄3 days with reference to the stars, and has a diameter of 2160 miles (3475 kilometers), a mean distance from the earth of about 238,900 miles (384,400 kilometers), and a mass about one eightieth that of the earth (often capitalized : usually used with the) — Merriam-Webster   See also   OneLook


The Moon is an astronomical body that orbits planet Earth, being Earth’s only permanent natural satellite. It is the fifth-largest natural satellite in the Solar System, and the largest among planetary satellites relative to the size of the planet that it orbits (its primary). Following Jupiter’s satellite Io, the Moon is second-densest satellite among those whose densities are known. The average distance of the Moon from the Earth is 384,400 km (238,900 mi),[10][11] or 1.28 light-seconds. — Wikipedia

Moon (Encyclopædia Britannica)

Moon (COSMOS: The SAO Encyclopedia of Astronomy)



Articles about the Moon (Big Think)



Explore related posts on Cosma




Earth’s Moon (NASA)
Solar System Exploration: Moon (NASA Science)

Our Moon: the Moon (International Astronomical Union)
The Moon (Planetary Society)
Lunar Exploration (Lunar & Planetary Institute)

The Moon (Ask an Astronomer, Cornell University)

Moon (Eric Weisstein’s World of Astronomy, Wolfram Research)
Moon (Wolfram Alpha)




On 30 November 1609, Galileo aimed his telescope at the Moon. While not being the first person to observe the Moon through a telescope (English mathematician Thomas Harriot had done it four months before but only saw a “strange spottednesse”), Galileo was the first to deduce the cause of the uneven waning as light occlusion from lunar mountains and craters. In his study, he also made topographical charts, estimating the heights of the mountains. The Moon was not what was long thought to have been a translucent and perfect sphere, as Aristotle claimed. — Wikipedia

The Moon (The Galileo Project)
The View from Galileo’s Telescope (MicroObservatory, Center for Astrophysics, Harvard & Smithsonian)

Surveyor Program was a NASA program that sent seven robotic spacecraft to the surface of the Moon between June 1966 and January 1968. The primary goal was to demonstrate the feasibility of soft landings on the Moon. The program was implemented by NASA’s Jet Propulsion Laboratory (JPL) to prepare for the Apollo program, and started in 1960. The missions called for the craft to travel directly to the Moon on an impact trajectory, a journey that lasted 63 to 65 hours, and ended with a deceleration of just over three minutes to a soft landing. Five of the Surveyor craft successfully soft-landed on the Moon, including the first one. The other two failed: Surveyor 2 crashed at high velocity after a failed mid-course correction, and Surveyor 4 lost contact (possibly exploding) 2.5 minutes before its scheduled touch-down. — Wikipedia

Surveyor 7 Launches (NASA)
Surveyor 7 (NASA)
Surveyor 7 (JPL, NASA)
Surveyor 7 (Lunar and Planetary Institute)
Surveyor 7 (Wikipedia)

Surveyor (NASA Goddard Space Flight Center)
Surveyor Program (Lunar and Planetary Institute)
Surveyor Space Probe (Encyclopædia Britannica)

On October 11th, 1968, just 15 months from President Kennedy’s deadline for a moon landing, NASA launched its first Apollo crew into space. Apollo 7’s Wally Schirra, Donn Eisele, and Walter Cunningham spent 11 days in low Earth orbit, thoroughly testing the Apollo Command and Service Module’s systems. The crew also won an Emmy for the first live television broadcasts from an American spacecraft. — NASA

About Apollo 7, the First Crewed Apollo Space Mission (NASA)
Apollo 7: The First Mission (NASA History Division)
Apollo 7 Mission Overview (Lunar and Planetary Institute)
Apollo 7 (Wikipedia)

Apollo Mission (NASA)
Apollo Program (National Air and Space Museum)
Apollo Space Program (Encyclopædia Britannica)
Apollo Program (Wikipedia)


Moon Online Exhibitions (Smithsonian)


DDC: 523.3 Moon (Library Thing)
Subject: Moon (Library Thing)

Subject: Moon (Open Library)

LCC: QB 580 Moon (UPenn Online Books)

LCC: QB 580 Moon (Library of Congress)
Subject: Moon (Library of Congress)

Subject: Moon (WorldCat)




Teach with the Moon (European Space Agency)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources



Lunar Section (British Astronomical Association)


Moon (JSTOR)
TERM (EurekaAlert, AAAS)
Moon (Astronomy Magazine)
Moon (Science Daily)
Moon (
Moon (NPR Archives)



Earth’s Moon (



Here are links to pages about closely related subjects.

Knowledge Realm


Law (Constant) Relativity
Force Gravity, Electromagnetism (Light, Color)
Matter (Microscope) Molecule, Atom (Periodic Table), Particle

Universe (Astronomical Instrument)
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon

Our Neighborhood
Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Our Moon, Luna), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid

See also   Space Transportation


1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.