It is estimated Mercury’s core makes up 42% of its volume, while the Earth’s core makes up 17%. Mercury is only the second hottest planet. Despite being further from the Sun, Venus experiences …

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 …

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, 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 unaided …

Dec 24, 2025 · Mercury is, without a doubt, one of the most extreme planets of all: this planet is the smallest and the closest to the Sun, and the difference between night and day temperatures here …

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 because …

Mar 26, 2024 · Get facts about the planet Mercury. Learn about its orbit, temperature extremes, and atmosphere. Discover whether life on Mercury is likely.

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.

Mercury's eccentric orbit and wide-ranging temperatures make it a world of extremes. Explore facts about our solar system's fastest and often elusive planet.

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 cratered …