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  2. Moon - Wikipedia

    en.wikipedia.org/wiki/Moon

    The Moon is by size and mass the fifth largest natural satellite of the Solar System, ... is approximately 400,000 km (250,000 miles or 1.28 light-seconds), ...

  3. Lunar distance - Wikipedia

    en.wikipedia.org/wiki/Lunar_distance

    238 854 miles ... Earth–Moon distance, or distance to the Moon, ... Moon with enough precision to detect and measure this tiny variation in apparent size.

  4. List of Solar System objects by size - Wikipedia

    en.wikipedia.org/wiki/List_of_Solar_System...

    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.

  5. What Makes Pluto So Intriguing - AOL

    www.aol.com/news/makes-pluto-intriguing...

    The 1,477-mile wide world had a 751-mile wide moon—the largest moon relative to the size of its parent body in the solar system. ... of 4.67 billion miles. That, plus Pluto’s small size ...

  6. July’s supermoon will be 14,000 miles closer to Earth than a ...

    www.aol.com/news/july-supermoon-14-000-miles...

    While the size difference between a supermoon and a typical full moon may not be immediately apparent to the naked eye, The Old Farmer’s Almanac says the first full moon of summer will be more ...

  7. Orbit of the Moon - Wikipedia

    en.wikipedia.org/wiki/Orbit_of_the_Moon

    With a mean orbital velocity around the barycentre between the Earth and the Moon, of 1.022 km/s (0.635 miles/s, 2,286 miles/h), [6] the Moon covers a distance approximately its diameter, or about half a degree on the celestial sphere, each hour.

  8. Two Grand Canyon-size valleys on the far side of the moon ...

    www.aol.com/news/two-grand-canyon-size-valleys...

    Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object ... (270 kilometers) long and 1.7 miles (2.7 kilometers) deep, and Vallis ...

  9. Astronomical unit - Wikipedia

    en.wikipedia.org/wiki/Astronomical_unit

    The book On the Sizes and Distances of the Sun and Moon, which is ascribed to Aristarchus, says the distance to the Sun is 18 to 20 times the distance to the Moon, whereas the true ratio is about 389.174. The latter estimate was based on the angle between the half-moon and the Sun, which he estimated as 87° (the true value being close to 89. ...