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The adjectival forms of the names of astronomical bodies are not always easily predictable. Attested adjectival forms of the larger bodies are listed below, along with the two small Martian moons; in some cases they are accompanied by their demonymic equivalents, which denote hypothetical inhabitants of these bodies.
Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution.
Electrical installations. An earthing system (UK and IEC) or grounding system (US) connects specific parts of an electric power system with the ground, typically the equipments conductive surface, for safety and functional purposes. [1] The choice of earthing system can affect the safety and electromagnetic compatibility of the installation.
The word adam may refer to that this being was an "earthling" formed from the red-hued clay of the earth (in Hebrew, adom means "red", adamah means "earth"). [17] The Qur'an (Qur'an 23:12), [18] states, "Man We did create from a quintessence of clay" [A. Yusuf Ali translation].
Film and television. Earthling (film), a 2010 sci-fi film. Earthlings (film), a 2005 animal rights documentary. The Earthling, a 1980 drama film. "Earthling" (Fringe), a 2009 TV episode. "Earthlings" (Steven Universe), a 2016 TV episode. Earthlings, original code-name for The L Word TV series.
The term itself, however, was coined by Jack Williamson in a science-fiction short story ("Collision Orbit") published in 1942 in Astounding Science Fiction, [6] [7] [4]: 235 [8] although the concept of terraforming in popular culture predates this work; for example, the idea of turning the Moon into a habitable environment with atmosphere was ...
The history of Earth is divided into four great eons, starting 4,540 mya with the formation of the planet. Each eon saw the most significant changes in Earth's composition, climate and life. Each eon is subsequently divided into eras, which in turn are divided into periods, which are further divided into epochs. Eon.
The earliest known life forms on Earth may be as old as 4.1 billion years (or Ga) according to biologically fractionated graphite inside a single zircon grain in the Jack Hills range of Australia. [2] The earliest evidence of life found in a stratigraphic unit, not just a single mineral grain, is the 3.7 Ga metasedimentary rocks containing ...