Which is the Earth's only natural satellite?
By cuddiluk
@cuddiluk (1523)
Philippines
     
    
    16 responses
         @moneymind (10510)
 • Philippines
                    26 Nov 06
                    that would be the moon. The Moon is Earth's only natural satellite. It has no formal English name other than "the Moon", although it is occasionally called Luna (Latin: moon), or Selene (Greek: moon), to distinguish it from the generic term "moon" (referring to any of the various natural satellites of other planets). Its symbol is a crescent (?). The related adjective for the Moon is lunar (again from the Latin root), but this is not found in combination with the forms seleno-/-selene (again from the Greek) and -cynthion (from the Lunar deity Cynthia).
from the site http://www.wikipedia.org
greetings.  : )
                     @Al3xius (1776)
 • Romania
                    26 Nov 06
                    The Moon is the Earth's sole companion, orbiting at an average distance of 384,400km. It follows us on our path around the Sun, making one orbit of us (as seen against the background of stars) every 27 days, 7 hours, 43 minutes. This period is referred to as the sidereal month. The Moon's equatorial diameter measures 3,476km making it less than one third the diameter of the Earth.
Eclipses
As the orbital plane of the Moon lies within 5° of the apparent orbit of the Sun as seen from Earth, occasionally their positions in the sky coincide, giving rise to a solar eclipse. The photo above shows the shadow cast by the moon - around 100 km across it moves at over mach 2! 
Solar Eclipses
At other times the Moon's orbit takes it into the shadow cast by the Earth into space, causing a lunar eclipse. Unlike solar eclipses, Lunar eclipses are readily observed from large areas of the Earth's surface, due to the greater extent of the Earth's shadow than that of the Moon's. 
Map of the Moon 
Philip's do a large map of the Earth-facing side of the Moon with over 500 named features plus the landing sites of spacecraft. It's perfect for any classroom wall, or even for serious observations.
source : harmsy.freeuk.com
                    2  people like this
                                        
                     @shadowauror (1515)
 • India
                    26 Nov 06
                    ohhh lemme think ... ummmmmmmm ohhhhhhhhhh uhhhhhhhhhhhhh
is it .... THE MOOON????
                     @dnatureofdtrain (5273)
 • Janesville, Wisconsin
                    26 Nov 06
                    De Moon! De Moon Boss De Moon! ... And sometimes some occasional Asteroid or Meteor chunks :)
- DNatureofDTrain
                    
                            
                        
                    















