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"
A Hale-Bopp Triple Crown
23/07/1997
Asteroid 3753: Earth's Curious Companion
18/06/1997
Rockets and Robert Goddard
15/06/1997
Apollo 15: Driving on the Moon
07/06/1997
Apollo 15's Home on the Moon
10/05/1997
Apollo 12: Self-Portrait Credit:
09/05/1997
The Last Moon Shot Credit:
04/05/1997
Io's Sodium Cloud Credit:
28/04/1997
Sputnik: Traveling Companion Courtesy:
27/04/1997
Moon Robot: Lunokhod 1 Credit:
20/04/1997
Oceans Under Jupiter's Europa? Credit:
09/04/1997
Mercury Astronauts and a Redstone Credit:
06/04/1997
The Gamma Ray Moon Credit:
10/02/1997
Standing on the Moon Credit:
02/02/1997
Europa: The Latest From Galileo
17/01/1997
Eclipsed Moon in Infrared
10/01/1997
Io Rotating
31/12/1996
An Earth Ornament Credit:
25/12/1996
Ice at the Lunar South Pole Credit:
04/12/1996
Apollo 12 Visits Surveyor 3 Credit:
24/11/1996
Surveyor Hops
09/11/1996
Surveyor Night Launch Credit:
03/11/1996
The Barren Moon Credit:
31/10/1996
Orionids Meteor Shower to Peak Tonight Credit:
21/10/1996
Surveyor Slides
20/10/1996
The Earth Also Rises
13/10/1996
Io's Shadow Credit:
07/10/1996
The X-Ray Moon Credit:
29/09/1996
Tonight: A Total Lunar Eclipse Credit and Copyright:
26/09/1996
Venus: Earth's Cloudy Twin Credit:
23/09/1996