The exploration of the Moon: mission Apollo 15 (Endeavour-Falcon)
Photo of Apollo 15 prime crew consisted of David Scott, Alfred Worden and James Irwin. They participated in the fourth landing on the Moon in the region of Hadley-Apennine
The exploration of the Moon: mission Apollo 17 (Challenger-America)
Photograph of Apollo 17 prime crew. Eugene Cernan, Ronald Evans and Harrison Schmitt used a lunar rover for the three explorations on the moon in December 1972.
Photograph of the Vanguard TV3 failed launch, which led to its explosion (December 6, 1957) It was the first test for U.S. International Geophysical Year program to place an artificial satellite
In a billion of years life in Earth will be extinct, as the temperature will increase and the water will boil down. Only thermophillic bacteria cοuld live in the water of deep sea trenches
The galaxy Centaurus Alpha is located about 10 million from the Earth towards the constellation of the Centaurus. This is an elliptical galaxy, which, as the photo depicts, devour a smaller spiral galaxy.
View of the geocentric model of the solar system according to Eudoxus who believed that the Moon, the Sun, the planets and the stars orbit around the Earth