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.

Nov 29, 2025 · Mercury has a radius of about 2,440 km, and its surface area is 74,797,000 km 2. Its mass is 3.30 × 10 23 kg. Mercury is the smallest major planet in both size and mass.

Apr 25, 2025 · Mercury formed about 4.5 billion years ago when gravity pulled swirling gas and dust together to form this small planet nearest the Sun. Like its fellow terrestrial planets, Mercury has a …

Mar 27, 2025 · Mercury’s mass is 3.3010 x 10^23 kg (7.28 x 10^22 lbs), 20 times less massive than Earth. Mercury’s size is smaller when compared to other celestial bodies in the solar system.

Among the four inner Solar System planets, Mercury is the smallest and very dense, its vast iron core dominating its internal structure.

Dec 3, 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 size. To …

The mass of Mercury in kg is approximately 3.30e+23 kg, which is 18.09× less than Earth's mass. This substantial mass creates a significant gravitational field that influences everything from atmospheric …

The mass of the planet Mercury is approximately 3.285 × 10 23 kg. This is only 6% of Earth's mass.

It takes 88 Earth days to orbit the Sun, and rotates very slowly at a rate of 1 rotation every 58.7 Earth days. Its mass is 3.3 x 10 23 kg or 0.055 Earth masses. It has no moons, little to no atmosphere and …

Mercury is the first planet and is 85% iron core surrounding by a thin heavily-cratered crust.