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  2. Mercury (planet) - Wikipedia

    en.wikipedia.org/wiki/Mercury_(planet)

    Mercury is one of four terrestrial planets in the Solar System, which means it is a rocky body like Earth. It is the smallest planet in the Solar System, with an equatorial radius of 2,439.7 kilometres (1,516.0 mi). [4] Mercury is also smaller—albeit more massive—than the largest natural satellites in the Solar System, Ganymede and Titan.

  3. Geology of Mercury - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Mercury

    The geology of Mercury is the scientific study of the surface, crust, and interior of the planet Mercury. It emphasizes the composition, structure, history, and physical processes that shape the planet. It is analogous to the field of terrestrial geology. In planetary science, the term geology is used in its broadest sense to mean the study of ...

  4. List of quadrangles on Mercury - Wikipedia

    en.wikipedia.org/wiki/List_of_quadrangles_on_Mercury

    The surface of the planet Mercury has been divided into fifteen quadrangles, designated H-1 to H-15 (the 'H' stands for Hermes, the Greek equivalent of Mercury). [1] The quadrangles are named for prominent surface features visible within each area. [1] The quadrangles were initially named for albedo features, as these were the most prominent ...

  5. NASA releases colorful new picture of Mercury before probe ...

    www.aol.com/article/2015/04/28/nasa-releases...

    Looking good, Mercury! NASA produced stunning new images this week one of Earth's closest planetary neighbors, that might be just a little reminiscent of a '60s-era poster The pics came courtesy ...

  6. Mercury could have an 11-mile underground layer of diamonds ...

    www.aol.com/mercury-could-11-mile-underground...

    A layer of diamonds up to 18 kilometers (11 miles) thick could be tucked below the surface of Mercury, the solar system’s smallest planet and the closest to the sun, according to new research ...

  7. Exploration of Mercury - Wikipedia

    en.wikipedia.org/wiki/Exploration_of_Mercury

    The first probe to visit Mercury was Mariner 10. View of Mercury from Mariner 10 in March 1975. The exploration of Mercury has a minor role in the space interests of the world. It is the least explored inner planet. [1] As of 2015, the Mariner 10 and MESSENGER missions have been the only missions that have made close observations of Mercury.

  8. Spacecraft swoops close to Mercury and snaps images of its ...

    www.aol.com/spacecraft-swoops-close-mercury...

    Mercury is a mystery.Just two spacecraft have ever flown by the closest planet to the sun. Now the BepiColombo mission, a joint European-Japanese science undertaking, is on track to orbit and ...

  9. Atmosphere of Mercury - Wikipedia

    en.wikipedia.org/wiki/Atmosphere_of_Mercury

    Mercury, being the closest to the Sun, with a weak magnetic field and the smallest mass of the recognized terrestrial planets, has a very tenuous and highly variable atmosphere (surface-bound exosphere) containing hydrogen, helium, oxygen, sodium, calcium, potassium and water vapor, with a combined pressure level of about 10 −14 bar (1 nPa ...