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The size of solid bodies does not include an object's atmosphere. For example, Titan looks bigger than Ganymede, but its solid body is smaller. For the giant planets, the "radius" is defined as the distance from the center at which the atmosphere reaches 1 bar of atmospheric pressure. [11]
The sizes are listed in units of Jupiter radii (R J, 71 492 km).This list is designed to include all planets that are larger than 1.7 times the size of Jupiter.Some well-known planets that are smaller than 1.7 R J (19.055 R 🜨 or 121 536.4 km) have been included for the sake of comparison.
The smallest of these, Kepler-42d, is about the size of Mars with a radius of only 0.57 times that of Earth. Not long ago, in Dec. of 2011, the Kepler team announced the discovery of Kepler-20e and Kepler-20f -- the first Earth-size planets ever found outside the solar system.
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Original file (3,000 × 2,601 pixels, file size: 1.35 MB, MIME type: image/jpeg) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Strong Support pending verification and referencing of data used to construct the image - assuming it's all true, this is an incredible valuable image to illustrate the sheer size of objects in the Universe. People think Earth is big, then Jupiter is quite a bit bigger, then the Sun's a bit bigger than that - but when you realise the Sun would ...
Image title: Comparison of angular diameter of the Sun, Moon and planets with the International Space Station and human visual acuity, compiled by CMG Lee. To get a true representation of the sizes, view the image at a distance of 103 [1 / tan(33.5/60 * pi/180)] times the width of the largest (Moon: max.) circle.
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