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"Inferior planet" refers to Mercury and Venus, which are closer to the Sun than Earth is. "Superior planet" refers to Mars, Jupiter, Saturn, Uranus, and Neptune (the latter two added later), which are further from the Sun than Earth is. The terms are sometimes used more generally; for example, Earth is an inferior planet relative to Mars.
Earth orbits the Sun, making Earth the third-closest planet to the Sun and part of the inner Solar System. Earth's average orbital distance is about 150 million km (93 million mi), which is the basis for the astronomical unit (AU) and is equal to roughly 8.3 light minutes or 380 times Earth's distance to the Moon .
First image of Earth from another astronomical object (the Moon) and first picture of both Earth and the Moon from space. [32] [33] [34] [7] [19] December 11, 1966 ATS-1: First picture of both Earth and the Moon from the Earth's orbit. [35] First full-disk pictures of the Earth from a geostationary orbit. [35] [image needed] January 1967
Planets whose orbits lie within the orbit of Earth. [nb 1] Mercury and Venus: Inner planet: A planet in the Solar System that have orbits smaller than the asteroid belt. [nb 2] Mercury, Venus, Earth, Mars: Outer planet: A planet in the Solar System beyond the asteroid belt, and hence refers to the gas giants. Jupiter, Saturn, Uranus and Neptune ...
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(110–210 Earth radii) 6.36×10 6 –1.27×10 7: The space dominated by Earth's magnetic field and its magnetotail, shaped by the solar wind. [17] Earth's orbit: 299.2 million km [b] 2 AU [c] 2.99×10 8: The average diameter of the orbit of the Earth relative to the Sun. Encompasses the Sun, Mercury and Venus. [18] Inner Solar System ~6.54 AU ...
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Astronaut, Susan Helms, looking out the window on the International Space Station. Windows on Earth is a museum exhibit, website, and exploration tool, developed by TERC, Inc. (an educational non-profit organization, previously called Technical Education Research Centers [1]), and the Association of Space Explorers, that enables the public to explore an interactive, virtual view of Earth from ...
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