Earth Moon

Cosma / Communication / Knowledge / Realm / Physical / Universe / Solar System / Terrestrial/ Earth / Our Moon, Luna

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Introduction1

Dictionary

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) — Webster

OneLook, Free Dictionary, Wiktionary

Encyclopedia

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.

The Moon is in synchronous rotation with Earth, always showing the same face, with its near side marked by dark volcanic maria that fill the spaces between the bright ancient crustal highlands and the prominent impact craters. It is the second-brightest regularly visible celestial object in Earth’s sky, after the Sun, as measured by illuminance on Earth’s surface. Its surface is actually dark, although compared to the night sky it appears very bright, with a reflectance just slightly higher than that of worn asphalt. Its prominence in the sky and its regular cycle of phases have made the Moon an important cultural influence since ancient times on language, calendars, art, and mythology.

The Moon’s gravitational influence produces the ocean tides, body tides, and the slight lengthening of the day. The Moon’s current orbital distance is about thirty times the diameter of Earth, with its apparent size in the sky almost the same as that of the Sun, resulting in the Moon covering the Sun nearly precisely in total solar eclipse. This matching of apparent visual size will not continue in the far future. The Moon’s linear distance from Earth is currently increasing at a rate of 3.82 ± 0.07 centimetres (1.504 ± 0.028 in) per year, but this rate is not constant. — Wikipedia

Encyclopædia Britannica

Portal

Solar System Exploration: Earth’s Moon (NASA)

Search

WolframAlpha

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Innovation

Science

Lunar Reconnaissance Orbiter (NASA)
Lunar Reconnaissance Orbiter (Wikipedia)

Commerce

Who owns the moon? A space lawyer answers (Frans von der Dunk, PBS News Hour)
Who owns the moon? A space lawyer answers (Frans von der Dunk, The Conversation)
The FAA: regulating business on the moon (Irene Klotz, Reuters)

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Preservation

History

Note: These are 360° Videos — press and hold to explore them!

History of the Exploration of Earth’s Moon (NASA)
The Apollo Missions (NASA)
The Apollo Program (Smithsonian National Air and Space Museum)
The Apollo Program (Wikipedia)

Quotation

Quotations Page

Museum

A big fake Moon is slowly making its way around the Earth (Mike Wehner, BGR)
Museum of the Moon

Library

WorldCat, Library of Congress, UPenn Online Books, Open Library

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Participation

The Moon (Ask an Astronomer, Cornell University)

Course

Crash Course Astronomy (YouTube)

OER Commons: Open Educational Resources

Community

Blog

Moon (The Science Geek)

News

Science Daily, Phys.org, NPR Archives

Book

ISBNdb

Government

Document

USA.gov

Future

Potential human habitat located on the moon (Purdue University)

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Expression

Note: This is a 360° Video — press and hold to explore it!

Arts

Poem

OEDILF: The Omnificent English Dictionary In Limerick Form

Music

Song Lyrics

returntotop


More News …

Moon News -- ScienceDaily Moon News. Current science articles on the Moon. Read about the new lunar mission being planned, how the "Man In The Moon" was created, moon landing facts and more. Images.

  • Astronauts may one day drink water from ancient...
    on May 18, 2022 at 1:04 am

    If any humans had been alive 2 to 4 billion years ago, they may have looked up and seen a sliver of frost on the moon's surface. Some of that ice may still be hiding in craters on the lunar surface today.

  • A first: Scientists grow plants in soil from the...
    on May 12, 2022 at 4:18 pm

    Scientists have, for the first time, grown plants in soil from the Moon. They used soil collected during the Apollo 11, 12 and 17 missions. In their experiment, the researchers wanted to know if plants would grow in lunar soil and, if so, how the plants would respond to the unfamiliar environment, […]

  • Lunar soil has the potential to generate oxygen...
    on May 5, 2022 at 3:46 pm

    Soil on the moon contains active compounds that can convert carbon dioxide into oxygen and fuels, scientists report. They are now exploring whether lunar resources can be used to facilitate human exploration on the moon or beyond.

  • Earth's atmosphere may be source of some lunar...
    on April 28, 2022 at 1:13 am

    Hydrogen and oxygen ions escaping from Earth's upper atmosphere and combining on the moon could be one of the sources of the known lunar water and ice, according to new research.

  • Differences between the Moon’s near and far...
    on April 8, 2022 at 6:29 pm

    New research shows how the impact that created the Moon's South Pole -- Aitken basin is linked to the stark contrast in composition and appearance between the two sides of the Moon.


Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Scientists grow plants in lunar dirt, next stop...
    on May 14, 2022 at 2:30 pm

    For the first time, scientists have grown plants in soil from the moon collected by NASA's Apollo astronauts.

  • Moon goes blood red this weekend: 'Eclipse for...
    on May 13, 2022 at 8:31 pm

    A total lunar eclipse will grace the night skies this weekend, providing longer than usual thrills for stargazers across North and South America.

  • How to grow plants on the moon
    on May 13, 2022 at 3:09 pm

    What do you need to make your garden grow? As well as plenty of sunshine alternating with gentle showers of rain—and busy bees and butterflies to pollinate the plants—you need good, rich soil to provide essential minerals. But imagine you had no rich soil, or showers of rain, or bees and […]

  • Snapping a black hole: How the EHT...
    on May 12, 2022 at 3:20 pm

    Powerful enough to spot a golf ball on the moon, the Event Horizon Telescope (EHT) is a network of radio dishes designed to detect the light cast when matter disappears into the maw of a black hole.

  • A first: Scientists grow plants in soil from the...
    on May 12, 2022 at 3:00 pm

    Scientists have grown plants in soil from the Moon, a first in human history and a milestone in lunar and space exploration.

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Adventures

Explore related posts on Cosma

  • Moon’scapes (2/28/2020) - There’s no denying that it’s been a rough week for many Earthlings. On the other hand, it’s been a great week for anyone who spends their time more preoccupied with the Moon than with more earthly concerns. That’s because there’s a treasure trove of news about our lunar realm. For example, NASA’s Goddard Media Studios … Continue reading Moon’scapes
  • Lunar Landings (7/19/2019) - Saturday, July 20th is the 50th anniversary of the Apollo 11 Moon Landing, and there’s a massive media blitz surrounding the occasion. Pretty much every major news outlet is covering it in some way, and it’s no surprise that NASA is leading the publicity frenzy. On Friday at 1 p.m. (EDT) NASA is broadcasting 50 … Continue reading Lunar Landings
  • Get Lost in Space! (9/14/2018) - Way back in August, in anticipation of the start of a new school year, I set out to update the pages on this site related to space. Those pages tend to be popular among the teachers and students who use Cosma, and I happen to enjoy updating them, too. It sounded like a short, fun … Continue reading Get Lost in Space!
  • Octopuses from Space! (5/20/2018) - Did you hear the one about the octopuses from space? It sounds like the title of a cheesy sci-fi movie, doesn’t it? But it isn’t, this time, or at least, yet. Instead, it’s actually an oddball theory that’s been put forth in a recently published “scientific” article that’s getting quite a lot of buzz in … Continue reading Octopuses from Space!
  • Umbraphiles (8/20/2017) - umbraphile : One who loves eclipses, often travelling to see them. — Wiktionary Yes, this is that obligatory post about “The Solar Eclipse” (NASA, Wikipedia). Of course, there had to be one — eclipses really are just too cool to ignore. You’ve already been bombarded with explanations of the science and history of eclipses, but … Continue reading Umbraphiles
  • Moon+H2O=Moonbase? (7/25/2017) - One of the big science stories in the news right now is that Earth’s Moon has more water than scientists expected. This Newsy video is just one of the hundreds of stories flooding news feeds. This round of stories has been inspired by this article in Nature Geoscience. Remote detection of widespread indigenous water in … Continue reading Moon+H2O=Moonbase?

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Related

Here are links to pages about closely related subjects.

Knowledge Realm

Physical

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

“Space”
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

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Notes

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