Critical articles and essays - 2

• What do you know about the hollow Earth and the hollow Moon?

Many works of the world literature are inspired on the idea of a hollow Earth. That led to some authors to write the we live inside the Earth and that the rest is only an optical illusion.

• What do you know about the fear of comets?

Do you believe that the World War II was caused by the appearance of a comet? Can you believe that a civilization can fall just by the return of another one?

• Three unexpected behaviors of the infinite

Are the grains of sand infinite? No, that question was elegantly answered by Archimedes several centuries ago. Modern question about the infinite are of the sort: How many types of infinites are there?

• What do you know about the paradox of the Great Silence?

If there are other extraterrestrial civilizations --similar to ours-- how come we don't hear signals from them --similar to the ones we send to space?

• What do you know about the pyramid inside the Moon?

David Berg, founder of the "Children of God" claimed he visited the Moon and found there is a pyramid inside it; he found the Heavenly City.

• What do you know about the first burial on the Moon?

Several humans have visited the Moon, but only one was sent there after his death; by a true act of love from his wife.

• What do you know about the Moon Trees?

When NASA astronaut Stuart Roosa returned from the Moon in an Apollo 14 mission he brought with him several tree seeds that were later germinated. Are they still alive?

• What are conformal mappings?

Some plane surfaces can be mathematically distorted to produce unexpected spatial figures. Plane color figures are the most interesting.

• Where does infinity begin?

Can we name the number nearest to infinity? How far is the infinite? Nearer than you think, because it al begins with the number 1.

• Is it really possible to generate a plane by moving a straight line perpendicular to itself?

We cannot move a line perpendicular to itself to generate a plane because this implies the pre-existence of a space into which we can move our straight line