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.

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Apr 25, 2025 · Mercury is the smallest planet in our solar system and nearest to the Sun. It's only slightly larger than Earth's Moon. From the surface of Mercury, the Sun would appear more …

Dec 3, 2025 · Explore the closest planet to the Sun! Find out how long a day on Mercury is and how many moons the planet has. Also, keep up with the upcoming Mercury events!

Aug 1, 2022 · Mercury is the closest planet to the Sun in our solar system. Mercury is the smallest planet in the solar system with a diameter of 3,032 miles, only 435 miles larger than Earth’s …

Jul 19, 2024 · Mercury, the planet closest to the Sun, is the smallest planet in our solar system. Known for its swift orbit, Mercury completes a trip around the Sun in just 88 Earth days, …

Apr 25, 2025 · Explore the 3D world of the Solar System. Learn about past and future missions.

Mercury is one of four inner planets in the Solar System. It is a terrestrial planet like Earth. It is the smallest planet in the Solar System, with a radius of 2,439.7 km (1,516.0 mi). [3] Mercury is …

Nov 20, 2025 · This information sheet features images of Mercury taken from the Mariner 10 and MESSENGER missions along with general information, significant dates and interesting facts …

The closest planet to the Sun, Mercury orbits in only 88 Earth days. However, its rotation is so slow that a "day" on Mercury lasts twice as long as its year.