Back to Glossary

The Moon

The Moon is Earth’s only natural satellite—a rocky, cratered body about one‑quarter the diameter of Earth, orbiting at an average distance of approximately 384,400 km. It influences tides, stabilizes Earth’s axial tilt, and was formed about 4.5 billion years ago following a collision between Earth and a Mars-sized object.

Source: science.nasa.gov

APODs including "The Moon"

Parthenon Moon

Parthenon Moon

20/03/2011

Mare Orientale

Mare Orientale

12/03/2011

Discovery in Twilight

Discovery in Twilight

10/03/2011

Asteroids in the Distance

Asteroids in the Distance

06/03/2011

Lunar Nearside

Lunar Nearside

03/03/2011

Red Snow Moon Over Edmonton

Red Snow Moon Over Edmonton

28/02/2011

Apollo 14: A View from Antares

Apollo 14: A View from Antares

05/02/2011

Gibbous Europa

Gibbous Europa

30/01/2011

Phobos' South Pole from Mars Express

Phobos' South Pole from Mars Express

24/01/2011

A Total Eclipse at the End of the World

A Total Eclipse at the End of the World

15/01/2011

Eclipsing the Sun

Eclipsing the Sun

05/01/2011

Looking Back at an Eclipsed Earth

Looking Back at an Eclipsed Earth

02/01/2011

Eclipse at Moonset

Eclipse at Moonset

29/12/2010

The Solstice Moon's Eclipse

The Solstice Moon's Eclipse

23/12/2010

A Lunar Eclipse on Solstice Day

A Lunar Eclipse on Solstice Day

20/12/2010

A Twilight Occultation

A Twilight Occultation

10/12/2010

Moonrise Through Mauna Kea's Shadow

Moonrise Through Mauna Kea's Shadow

05/12/2010

Water Ice Detected Beneath Moon's Surface

Water Ice Detected Beneath Moon's Surface

25/10/2010

Moonquakes Surprisingly Common

Moonquakes Surprisingly Common

10/10/2010

Aurora Over Alaska

Aurora Over Alaska

06/10/2010

An Airplane in Front of the Moon

An Airplane in Front of the Moon

29/09/2010

Equinox and the Harvest Moon

Equinox and the Harvest Moon

24/09/2010

Opposite the Sun

Opposite the Sun

18/09/2010

Clouds, Birds, Moon, Venus

Clouds, Birds, Moon, Venus

15/09/2010

A Milky Way Shadow at Loch Ard Gorge

A Milky Way Shadow at Loch Ard Gorge

23/08/2010

Eclipse Shadow Cone Over Patagonia

Eclipse Shadow Cone Over Patagonia

04/08/2010

The Planet and the Radio Dish

The Planet and the Radio Dish

03/08/2010

Diamond Ring and Shadow Bands

Diamond Ring and Shadow Bands

24/07/2010

Andes Sunset Eclipse

Andes Sunset Eclipse

15/07/2010

Easter Island Eclipse

Easter Island Eclipse

14/07/2010