How big is Mercury?

By Forinfos - 15/02/2026 - 0 comments

Mercury has a radius of 2,439.7 kilometers, making it smaller than some moons and the smallest planet in the solar system. Its mass is equal to 0.055 of Earth's.

One of Mercury's most defining features is its atmosphere, which is made up of atoms blasted from the surface by solar wind. Due to Mercury's extreme heat, these atoms quickly travel out into space, which means the planet's atmosphere is constantly being replenished. Because of this thin atmosphere, temperatures on Mercury range from negative 280 degrees Fahrenheit to 800 degrees Fahrenheit. No other planet in the solar system has such extreme swings in temperature.

Login to Comment

Comments

Be the first to write a comment for this article.

Related Articles

How big is Antarctica? How can you treat mercury poisoning? How long does Mercury take to orbit the sun? How is mercury mined? How many hours are in a day on Mercury? How long is a year on Mercury? What is the melting point of mercury? How many days does it take for Mercury to orbit the sun? How did Mercury get its name? Is Mercury hot or cold?

Trending Articles

Where can you watch "Dance Moms"? What is "Agenda 21" by Glenn Beck about? Where are Bob Ross's oil paintings sold? What was J.D. Robb's first book series? What is the theme of "Freak the Mighty"? Where can you view "The Far Side" cartoon archive? Where can you see a list of all Hindi TV serials? What happens in the first episode of "Scandal", season 4? Is Teresa Earnhardt remarried? What free online radio stations play classical music?