moon

Table of Contents

Introduction References & Edit History Related Topics

Images, Videos & Interactives

Know about the moons of the solar system and giant impact hypothesis explaining the formation of the Earth's Moon

Explore the phases of the Moon and their effectiveness in tracking time

Interactive: A Tour of the Moon's Landmarks.

False-colour image of Saturn. Three of its satellites (Tethys, Dione, and Rhea) are visible as bright points on the left; a fourth moon, Mimas, can be seen in front of Saturn, below the ring system. This image is based on observations made by the Voyager spacecraft.

Three of the satellites of Uranus discovered by the Voyager 2 spacecraft are shown in an image taken Jan. 18, 1986.The largest of the satellites, 1986U1 (lower right), is about 90 km (55 miles) in diameter. In the upper right is the outermost ring of Uranus.

Discover facts about the Moon with an explanation of the supermoon phenomenon

False-colour images of the ring and satellites of Saturn, taken by the Hubble Space Telescope, Nov. 21, 1995. The satellite Dione appears just above the rings in the first two images; Mimas is visible at the outer edge of the rings; and other moons are visible near Saturn's disk on the right.

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Colorful winter sunset

What's the Difference Between a Solstice and an Equinox?

Galileo spacecraft image of the Moon taken on December 7, 1992. The distinct bright ray crater at the bottom of the image is the Tycho impact basin. The dark areas are lava rock filled impact basins: Oceanus Procellarum (on the left), Mare Imbrium (cont'd

5 Things People See in the Moon

Galileo spacecraft image of the Moon taken on December 7, 1992. The distinct bright ray crater at the bottom of the image is the Tycho impact basin. The dark areas are lava rock filled impact basins: Oceanus Procellarum (on the left), Mare Imbrium (cont'd

8 Questions About the Moon Answered

Planet Earth and lunar moon from space

Where Did the Moon Come From?

A 3d tour of Earth's Moon.

What Have We Left on the Moon?

Discover

Dr. Martin Luther King Jr. addresses marchers during his "I Have a Dream" speech at the Lincoln Memorial in Washington. August 28th 1963

Was Martin Luther King, Jr., a Republican or a Democrat?

Alcoholic beverages bottles at Host 2013, international exhibition of the hospitality industry on OCTOBER 18, 2013 in Milan.

Why Is Alcohol Measured by Proof?

cloning. First cloned cat. First cloned companion animal. CC (copy cat) female domestic shorthair cat (b. Dec. 22, 2001) photo Jan. 18, 2002. Cloned at Texas A&M Univ. College of Vet. Med. & Biomedical Sciences. Reproductive cloning genetics DNA cc cat

CC, The First Cloned Cat

Pluto. Crop of asset: 172304/IC code: pluto0010 at 270 degrees. The Changing Faces of Pluto. Most detailed view to date of the entire surface of the dwarf planet Pluto, constructed from multiple NASA Hubble Space Telescope photographs 2002-03.

Wee Worlds: Our 5 (Official) Dwarf Planets

Malayan Leaf Frog - Megophrys nasuta

9 Animals That Look Like Leaves

magic 8 ball

Where Did the Idea for the Magic 8 Ball Come From?

Andrew Jackson delivering a speech while on his way to Washington, D.C., for his inauguration in 1829. From Harper's Weekly, 1881.

5 Remarkably Close U.S. Presidential Elections

moon: Related Content

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Photos and Videos

False-colour image of Saturn. Three of its satellites (Tethys, Dione, and Rhea) are visible as bright points on the left; a fourth moon, Mimas, can be seen in front of Saturn, below the ring system. This image is based on observations made by the Voyager spacecraft.

Three of the satellites of Uranus discovered by the Voyager 2 spacecraft are shown in an image taken Jan. 18, 1986.The largest of the satellites, 1986U1 (lower right), is about 90 km (55 miles) in diameter. In the upper right is the outermost ring of Uranus.

False-colour images of the ring and satellites of Saturn, taken by the Hubble Space Telescope, Nov. 21, 1995. The satellite Dione appears just above the rings in the first two images; Mimas is visible at the outer edge of the rings; and other moons are visible near Saturn's disk on the right.

Know about the moons of the solar system and giant impact hypothesis explaining the formation of the Earth's Moon

Explore the phases of the Moon and their effectiveness in tracking time

Discover facts about the Moon with an explanation of the supermoon phenomenon

See All Videos, Images and Interactives →

Topics

Moon libration Roche limit shepherd satellite co-orbital satellite earthshine dark side of the Moon opposition surge lunar eclipse secular acceleration of the Moon star small body space debris satellite dwarf planet extrasolar planet Mars Saturn Earth satellite Jupiter

Quiz

Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.

All About Astronomy

1 July 2002: The Solar and Heliospheric Observatory (SOHO) satellite reveals a massive solar eruption more than 30 times the Earth's diameter. The eruption formed when a loop of a magnetic field over the surface of the Sun trapped hot gas.

Brightest Star in the Solar System

The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet

Space Odyssey

Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.

All About Astronomy

Demystified

Colorful winter sunset

What's the Difference Between a Solstice and an Equinox?