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  1. In Depth | Mercury – NASA Solar System Exploration

    The smallest planet in our solar system and nearest to the Sun, Mercury is only slightly larger than Earth's Moon. From the surface of Mercury, the Sun would appear more than three times as …

  2. 10 Need-to-Know Things About Mercury - NASA Solar System …

    Mercury is the fastest planet in our solar system – traveling through space at nearly 29 miles (47 kilometers) per second. The closer a planet is to the Sun, the faster it travels. Since Mercury is …

  3. Mercury By the Numbers - NASA Solar System Exploration

    Jan 9, 2025 · Mercury is the closest planet to the Sun, and the smallest planet in our solar system - only slightly larger than Earth's Moon.

  4. Planet Compare - NASA Solar System Exploration

    Jan 9, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

  5. Mercury - NASA Solar System Exploration

    NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

  6. Mercury 3D Model - NASA Solar System Exploration

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  7. Mercury Lander Mission Concept Study - NASA Solar System …

    Jan 9, 2025 · The mission focuses on fundamental science questions that can be best, or only, achieved by surface operations such as determining Mercury''s bulk composition, the nature of …

  8. In Depth | Ganymede – NASA Solar System Exploration

    Not only is it the largest moon in our solar system, bigger than the planet Mercury and the dwarf planet Pluto, but NASA’s Hubble Space Telescope has found the best evidence yet for an …

  9. In Depth | Venus – NASA Solar System Exploration

    At its nearest to Earth, Venus is some 38 million miles (about 61 million kilometers) distant. But most of the time the two planets are farther apart; Mercury, the innermost planet, actually …

  10. What is a Planet? | Planets – NASA Solar System Exploration

    Pluto, discovered in 1930, was identified as the ninth planet. But Pluto is much smaller than Mercury and is even smaller than some of the planetary moons. It is unlike the terrestrial …

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