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Earth From Space - Amazing Photos |
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Earth is the third planet from the Sun and is the largest of the terrestrial planets in the Solar System , in both diameter and mass. Home to a myriad of species including humans, it is also referred to as "the Earth", "Planet Earth", "Gaia", "Terra", and "the World".
Outer space, sometimes simply called space, refers to the relatively empty regions of the universe outside the atmospheres of celestial bodies. Outer space is used to distinguish it from airspace (and terrestrial locations). Contrary to popular understanding, outer space is not actually empty (i.e. a perfect vacuum) but contains a low density of particles, predominantly hydrogen plasma, as well as electromagnetic radiation, dark matter and dark energy.                                                                     
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