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  1. Mercury (planet) - Wikipedia

    Early in the Solar System's history, Mercury may have been struck by a planetesimal of approximately 1⁄6 Mercury's mass and several thousand kilometers across. [44]

  2. Mercury | Facts, Color, Size, & Symbol | Britannica

    Nov 29, 2025 · Mercury has a radius of about 2,440 km, and its surface area is 74,797,000 km 2. Its mass is 3.30 × 10 23 kg. Mercury is the smallest major planet in both size and mass.

  3. Mercury Facts - Science@NASA

    Apr 25, 2025 · Mercury formed about 4.5 billion years ago when gravity pulled swirling gas and dust together to form this small planet nearest the Sun. Like its fellow terrestrial planets, Mercury has a …

  4. ESA - Meet Mercury

    Among the four inner Solar System planets, Mercury is the smallest and very dense, its vast iron core dominating its internal structure.

  5. Mass & Density of Mercury: Planet Mercury's Size, Diameter & Gravity

    At 5.427 g/cm³, Mercury has the second largest density in the Solar System. It is only slightly denser than Earth. Its density is the biggest thing in common that Earth and Mercury share. Mercury’s mass …

  6. Mercury Planet: Definition, Density, Color, Facts, Discovery

    Mar 27, 2025 · Mercury’s mass is 3.3010 x 10^23 kg (7.28 x 10^22 lbs), 20 times less massive than Earth. Mercury’s size is smaller when compared to other celestial bodies in the solar system.

  7. What is The Mass of Mercury Compared to Earth in Percentage

    Feb 26, 2024 · Mercury is the smallest planet in our solar system, and as a result, it possesses a relatively small mass. With a mass of approximately 0.055 times that of Earth, Mercury is …

  8. Mercury Facts | Mercury Size | Mercury Planet Color | How Big Is ...

    4 days ago · Mercury is the smallest planet in the Solar System in both mass and diameter. It’s 18 times less massive than the Earth, and its diameter barely reaches two-fifths of the Earth’s size.

  9. Mercury (Planet) — Radius, Mass, Orbital Period ... - GalaxyCalc

    The mass of Mercury in kg is approximately 3.30e+23 kg, which is 18.09× less than Earth's mass. This substantial mass creates a significant gravitational field that influences everything from atmospheric …

  10. Mass of Mercury (Terrestrial Planet) - webconversiononline.com

    Find Mass of Mercury (Terrestrial Planet) its density, volume, surface gravity, category and related information and mass of different solar system planets, moons, comets, asteroids, centaurs and …