Discovery and exploration of the Solar System Discovery and exploration of the Solar System Discovery and exploration of the Solar System is observation, visitation, and increase in knowledge and understanding of Earth's "cosmic neighborhood". This includes the Sun, Earth and the Moon, the major planets including Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune, their satellites, as well as smaller bodies including comets, asteroids, and dust. For many thousands of years, astronomers maintained a geocentric world view and did not recognize the existence of a Solar System. Most believed Earth was stationary at the center of the Universe and categorically different from the divine or ethereal objects
Third from the Sun called "Earth". Todd VanDerWerff of "The A.V. Club" rated it A and called the twist "justifiably famous". The episode contains an anomaly: the planet revealed as being Earth is described as being in another solar system, "11 million miles" away. The next closest solar system to our sun is actually 25.7 trillion miles away. Third from the Sun "Third from the Sun" is episode 14 of the American television anthology series "The Twilight Zone". It is based on a short story of the same name by Richard Matheson which first appeared in the first issue of the magazine "Galaxy Science