As transits of Venus come in pairs, each separated by 8 years, wouldn't that imply an accurate ratio between Earth's and Venus' revolution period? I've found the ratio to be about 0.681. I presume…
Sedna, the tenth planet in the Solar System? Researchers sponsored by NASA have discovered the most distant object in orbit of the Sun. It is a mysterious planet-like body in the confines of the Solar System, which is three times farther from Earth than Pluto. The Sun appears so small from that distance that it could be completely covered with the head of a pin.
Images of the story 160 photographs to illustrate the History of Astronomy and Astronautics. In this collection of images about the History of Astronomy, taken from various sources and grouped here for their educational and cultural interest, we intend to show a series of images about the history of Astronomy and Astronautics that are attractive and interesting.
ATS (satellites) Dictionary of astronomy, letter A The ATS are American satellites used for technological applications in communications, for the observation of terrestrial resources, in meteorology, and in navigation. They have had important jobs in the social, health and educational fields, contributing to raising the living conditions of many peoples.
Spacecraft photo The space age and astronautics start with the launch of Sputnik 1 by the Union of Soviet Socialist Republics (USSR) in October 1957, and with the Explorer 1 by the United States in January 1958. In October 1958 NASA created in the United States. In the next two decades, more than 1 were launched.
CONTEXT The equation $F_D=frac{GMm}{D^2}$ is a standard equation in Newtonian gravitation. It describes the centripetal force exerted, by a source mass$M$, on a target particle of mass $m$ locat…
