Universe Today describes the planet Mercury as a barren, lifeless rock that cannot support life. Among other conditions necessary for the formation and sustainability of life, liquid water is necessary. While scientists ... More »

People cannot live on Mercury because it does not have the right conditions to support life, offering instead extreme temperatures and an inhospitable atmosphere. Mercury is the closest planet to the sun, and it is also ... More »

The planet Mercury does not have any known moons (natural satellites) as of 2014. There has been one known artificial satellite orbiting Mercury, known as Messenger. More »

No one person discovered the planet Mercury. It has been observed for thousands of years, and although people might not have known what it was, they knew of its existence as early as 3000 B.C. More »

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The planet Mercury derived its name from the Roman god Mercury by virtue of being the fastest planet that travels across the sky. Due to Mercury's proximity to the sun, the planet is able to revolve quickly around the ma... More »

Mercury has a radius of 2,439.7 kilometers, making it smaller than some moons and the smallest planet in the solar system. Its mass is equal to 0.055 of Earth's. More »

Mercury is the smallest planet in the solar system, and it is only slightly larger than Earth's moon. The closest planet to the sun, Mercury takes just 88 Earth days to complete a single orbit. More »