
Mercury (planet) - Wikipedia
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.
Mercury Facts - Science@NASA
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.
Mercury | Facts, Color, Size, & Symbol | Britannica
Oct 21, 2025 · 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.
Mercury: Size, distance from the Sun, orbit | Astronomy.com
Oct 20, 2023 · Mercury is the closest planet to the Sun, with its average distance about 36 million miles (58 million km).
Mercury Facts | Mercury Size | Mercury Planet Color | How Big Is ...
2 days ago · 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 size.
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 …
Mercury Planet: Definition, Density, Color, Facts, Discovery ...
Mar 27, 2025 · Mercury is the smallest and innermost planet in the solar System, named after the Roman god Mercurius and known for its proximity to the Sun, extreme temperatures, and …
Mercury Planet Facts - Science Notes and Projects
Mar 26, 2024 · Mercury is the closest planet to the Sun and the smallest planet in the Solar System. It gets its name for the Roman god Mercury, who was the swift messenger of the gods.
Planet Mercury: Facts and Visibility
Mercury is the closest planet to the Sun, and the smallest planet in the solar system. It has a large iron core that accounts for about three-quarters of its mass.
All About Mercury | NASA Space Place – NASA Science for Kids
Sep 25, 2025 · Mercury has been known since ancient times because it can be seen without advanced telescopes. Because it is so close to the Sun, Mercury is hard to study from Earth.