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
Twice as Far Twice as Far "Twice as Far" is the fourteenth episode of the sixth season of the post-apocalyptic horror television series "The Walking Dead", which aired on AMC on March 20, 2016. The episode was written by Matthew Negrete and directed by Alrick Riley. This episode primarily focuses on two separate groups of characters going on supply runs; Daryl, Rosita, and Denise; and Abraham and Eugene. The episode marks Merritt Wever's final appearance of supporting character, Dr. Denise Cloyd, as she is killed off in this episode. It also marks the return of Austin Amelio as Dwight, who has been absent