Mercury (planet) - Wikipedia
Mercury is classified as a terrestrial planet, with roughly the same surface gravity as Mars. The surface of Mercury is heavily cratered, as a result of countless impact events that have accumulated over billions of years.
Mercury - NASA Science
Mercury is the smallest planet in our solar system and the nearest to the Sun. Mercury is only slightly larger than Earth's Moon. Its surface is covered in tens of thousands of impact craters.
Mercury Facts - Science@NASA
2017年10月16日 · 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 large as it does when viewed from Earth, and the sunlight would be as much as seven times brighter.
What Is the Planet Mercury? (Grades 5-8) - NASA
2011年3月30日 · Mercury is the smallest of the eight planets in our solar system. It is only a little bigger than Earth’s moon. It would take more than 18 Mercurys to be as big as Earth.
Planet Mercury, explained - National Geographic
2018年10月19日 · Named for the fleet-footed Roman messenger god, Mercury is the closest planet to the sun, zipping around our parent star at an average of 36 million miles away. However, Mercury’s orbit is not...
Mercury: Exploration - NASA Science
Because Mercury is so close to the Sun, it is hard to directly observe from Earth except during dawn or twilight when the Sun's brightness doesn't outshine little Mercury. The first spacecraft to visit Mercury was NASA's Mariner 10, which imaged about 45% of the surface.
Mercury | National Air and Space Museum
Although it is the smallest planet, Mercury has some of the largest fault scarps in our solar system. The shrinking of its interior has forced its single-planet surface to contract, creating fault scarps all over the planet. The largest is 620 miles (1,000 kilometers) long.
Solar System Tour - Mercury - NASA
Smallest of the inner terrestrial planets, Mercury has been geologically inactive for billions of years and its surface is peppered with craters of all sizes, including the Caloris Basin, one of the largest impact sites in the solar system.
Solar System Exploration: Mercury - NASA
2023年4月25日 · This site has facts, figures, images and links about the planet Mercury.
Mercury, world of extremes | The Planetary Society
Mercury is the smallest planet in the Solar System and the closest one to the Sun. It's also a little-explored world, full of mystery, with a surface split into extremes and an interior that puzzles scientists. Mercury is only slightly larger than Earth’s Moon.