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.

May 7, 2025 · Mercury Facts Mercury is the smallest planet in our solar system and the nearest to the Sun. Mercury is only slightly larger than Earth's Moon. It's the fastest planet, zipping …

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.

19 hours ago · Mercury retrograde starts Saturday, November 9 and goes through November 19. Here's what to know about how the last Mercury retrograde of 2025 will impact you.

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.

Nov 1, 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 …

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 …

Oct 21, 2025 · With a radius of about 2,440 km (1,516 miles), Mercury is the smallest major planet, smaller even than Jupiter’s largest moon, Ganymede, or Saturn’s largest moon, Titan. …

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.

Global view of Mercury, as seen by MESSENGER Credit: (NASA/JHU APL/ASU/CIW) Smallest of the inner terrestrial planets, Mercury has been geologically inactive for billions of years and its …