The moon is the only natural satellite of the Earth and the fifth largest moon in our solar system.
Our moon has phases because usually only part of the visible lunar surface from Earth is illuminated by the sun.
There are many theories about the origin of the moon. The prevailing theory is that the moon is caused by the Earth collided with Theia, a planet about the size of Mars.
There are other theories.
In 1962 NASA scientist, Dr. Gordon MacDonald said in a study: “Indeed, it would seem that the Moon is more like a hollow than a homogeneous sphere”
Nobel Prize winner Dr. Harold Urey stated that the interior of the moon contains large holes.
Dr. Sean C. Solomon, a former professor at the Massachusetts Institute of Technology, also wrote: “The Lunar Orbiter experiments vastly improved our knowledge of the Moon’s gravitational field… indicating the frightening possibility that the Moon might be hollow.”
Not a Natural Satellite
The famous astronomer Carl Sagan stated in the book Intelligent Life in the Universe, “It is hollow, which should be impossible were it a natural planetary object.”
The lunar landing of Apollo 11 on November 20, 1969, caused a moonquake. The moon echoed another hour after the landing.
Based on the seismic measurements during the Apollo 13 mission, the moon has a slight or no core at all.
According to Zulu traditions, the moon is hollow occupied by Python or Chitauri.
In the seventies, two scientists from the Academy of Sciences of the USSR wrote in the magazine Sputnik that the moon is hollow.