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Mercury is the smallest and innermost planet in the Solar System, with a highly elliptical orbit and a large iron core. Learn about its physical characteristics, orbit, rotation, surface features, atmosphere, history of observation, and exploration by space probes.
Mercury is a silvery-white, liquid metal that is the only metal that is liquid at standard temperature and pressure. It has various applications, such as in thermometers, batteries, and dental amalgams, but it is also highly toxic and has environmental and health risks.
Learn about Mercury, the smallest and fastest planet in our solar system, and its surface, atmosphere, and history of exploration. See images of Mercury from NASA missions and other sources.
Sep 21, 2024 · Mercury is the smallest planet in the solar system, and it is also the planet closest to the Sun, making it the most difficult of the planets to see with the unaided eye. Because its rising or setting is always within about two hours of the Sun’s, Mercury is never observable when the sky is fully dark.
- Clark R. Chapman
- Mercury has a radius of about 2,440 km, and its surface area is 74,797,000 km2. Its mass is 3.30 × 1023 kg. Mercury is the smallest major planet in...
- Mercury's average orbital distance from the Sun is 58 million km (36 million miles) and it has the shortest year (a revolution period of 88 days)....
- Two locations on Mercury’s equator are called hot poles, and surface temperatures there can exceed 700 kelvins (K; 800 °F, 430 °C). Surface tempera...
- Ganymede, a moon of Jupiter, and Titan, a moon of Saturn, are both larger than Mercury, the smallest major planet.
Learn about Mercury, the smallest and fastest planet in our solar system, and its extreme temperatures, surface features, and magnetic field. Find out why Mercury is named after the Roman god of speed and why it has no moons or rings.
Learn about Mercury, the smallest and closest planet to the Sun, with no moons or rings. Find out about its craters, core, temperature, rotation, orbit, and more.
Oct 19, 2018 · Learn about the smallest and fastest planet in our solar system, its surface features, orbit, and missions. Find out how Mercury's proximity to the sun affects its temperature, craters, and retrograde motion.
