Mercury is the first planet from the Sun and the smallest in the Solar System. It is a rocky planet with a trace atmosphere and a surface gravity slightly higher than that of Mars.

5 days ago · Mercury, the innermost planet of the solar system and the eighth in size and mass. Its closeness to the Sun and its smallness make it the most elusive of the planets visible to the …

May 7, 2025 · Mercury is the closest planet to the Sun, and the smallest planet in our solar system - only slightly larger than Earth's Moon.

Jun 26, 2025 · Facts about the planet Mercury, including surface features, missions and the history of our relationship with the closest planet to the Sun.

Mar 27, 2025 · Mercury is the smallest planet in the solar system and the closest to the Sun. Mercury exhibits a grayish color, high density, and extreme temperature fluctuations between …

Oct 19, 2018 · 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, …

Dec 24, 2025 · 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 …

Nov 13, 2025 · Mercury has been a cooled molten rock for billions of years, and it is the only planet in our Solar System that is bare rock. Planet Mercury is named after the Roman god …

Mercury is the innermost and smallest planet in the solar system, orbiting the Sun once every 88 days. Its brightness ranges from about -2.0 to 5.5 in apparent magnitude, but it is most often …

Mercury is the closest planet to the Sun. It is known as the Swift Planet because of how fast it travels through space—a whopping 29 miles per second (47 kilometers per second).