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A year on mercury is only 88 days long but a full day as we know is about 59 days even though the planet takes 58 days to rotate on its axis

By Elizabeth Marshall
Published in For Kids
February 02, 2024
2 min read
A year on mercury is only 88 days long but a full day as we know is about 59 days even though the planet takes 58 days to rotate on its axis

A Year on Mercury: A Brief 88 Days

Have you ever wondered how long a year on Mercury is? Well, it may surprise you to know that a year on the closest planet to the Sun is only 88 days long! That’s right, while we experience a complete trip around the Sun in about 365 days, Mercury accomplishes this feat in only 88 days.

Mercury, named after the Roman messenger of the gods, is the smallest planet in our solar system. It is approximately one-third the size of Earth, which makes it slightly larger than Earth’s Moon. Despite its small size, Mercury has some fascinating characteristics of its own.

One of the most intriguing aspects of Mercury’s orbit is its rotation. While it takes the planet 88 days to complete a full orbit around the Sun, it rotates on its axis in just 58 days. This means that a single day on Mercury, from sunrise to sunset, takes approximately 59 Earth days. It is interesting to note that a day on Mercury is longer than its year!

The slow rotation of Mercury also has several other consequences. Firstly, it leads to extreme temperature variations. As the planet rotates slowly, one side is exposed to the scorching heat of the Sun while the other side is plunged into freezing darkness. This disparity creates an enormous temperature difference, with highs of 800 degrees Fahrenheit (427 degrees Celsius) on the Sun-facing side and lows of -290 degrees Fahrenheit (-180 degrees Celsius) on the dark side.

Due to its close proximity to the Sun, Mercury experiences intense heat and solar radiation. These extreme conditions make it an inhospitable environment for life as we know it. With no thick atmosphere to protect it, the planet is bombarded by solar winds and particles that erode its surface over time.

To better understand the unique characteristics of Mercury, scientists have launched several spacecraft missions over the years. One of the most notable missions is NASA’s Messenger mission, which orbited the planet from 2011 to 2015. Through its observations and measurements, Messenger provided valuable insights about Mercury’s geology, composition, magnetic field, and more.

Despite being the closest planet to the Sun, Mercury is not the hottest planet in our solar system. That title goes to Venus, which experiences a runaway greenhouse effect due to its thick atmosphere. Nevertheless, Mercury’s year may be shorter than most, but its extreme temperatures and challenging conditions make it an intriguing subject of study.

To learn more about Mercury and its fascinating characteristics, you can visit the NASA Solar System Exploration website. The site provides in-depth information about Mercury’s orbit, surface features, exploration missions, and much more.

Here are a couple of images to give you a visual representation of Mercury. The first image shows the planet during its nighttime phase, courtesy of Enchanted Learning. The second image showcases a stunning view of Mercury against the backdrop of the Sun, courtesy of Pinterest.

Mercury at Night

Mercury against the Sun

In conclusion, a year on Mercury lasts only 88 days, while a full day on the planet takes about 59 Earth days. The slow rotation of Mercury contributes to extreme temperature variations and challenging conditions for exploration. Nevertheless, ongoing research and missions continue to unveil the secrets of this mysterious planet.


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#General#For Kids#Universe#Science

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Elizabeth Marshall

Elizabeth Marshall

Facts explorer

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