Mercury

Mercury Revolution

[/caption]
In scientific terms, an orbital revolution is the amount of time it takes for one object to orbit completely around another. So a Mercury revolution is the amount of time it takes for Mercury to completely orbit the Sun and then come back to its initial position. Here on Earth, we call that a year.

Mercury’s revolution around the Sun takes 87.969 days. So, you could say that Mercury’s year lasts almost 88 days.

But if you were standing on the surface of Mercury, you wouldn’t experience that many days. That’s because Mercury rotates on its axis very slowly, taking almost 59 days to rotate once. The strange thing is that if you were standing on the surface of Mercury, you would experience something very different. You would see the sun rise halfway, and then go back down again, and then rise up again before setting. The whole process would take about 2 of Mercury’s years.

Remember, the revolution of Mercury is how long the planet takes to travel around the Sun. The rotation of Mercury is how long it takes to turn once on its axis.

We’ve written many articles about Mercury for Universe Today. Here’s an article about the gravity on Mercury, and here’s an article about the composition of Mercury.

If you’d like more info on Mercury, check out NASA’s Solar System Exploration Guide, and here’s a link to NASA’s MESSENGER Misson Page.

We’ve also recorded several episodes of Astronomy Cast about the Solar System. Listen here, Episode 49: Mercury.

Fraser Cain

Fraser Cain is the publisher of Universe Today. He's also the co-host of Astronomy Cast with Dr. Pamela Gay. Here's a link to my Mastodon account.

Recent Posts

China Names its Capsule and Lander for its Upcoming Human Lunar Missions

In a recent announcement, the Chinese Space Agency (CSA) unveiled the names for its forthcoming…

13 hours ago

If Exoplanets Have Lightning, it’ll Complicate the Search for Life

Discovering exoplanets is almost routine now. We've found over 5,500 exoplanets, and the next step…

17 hours ago

Electrodes in Spacesuits Could Protect Astronauts from Harmful Dust on Mars

To quote NASA associate administrator Jim Reuter, sending crewed missions to Mars by 2040 is…

17 hours ago

Odysseus Moon Lander Sends More Pictures — and We Know Where It Is

Four days after Intuitive Machines' Odysseus lander made an off-kilter touchdown on the moon, the…

19 hours ago

Astronomers Discover a New Meteor Shower. The Source is Comet 46P/Wirtanen

Like many of you, I love a good meteor shower. I have fond memories of…

1 day ago

Surprise! Japan’s SLIM Moon Lander Wakes Up After a Freezing Night

Japan's space agency didn't expect its wrong-side-up SLIM moon lander to revive itself after powering…

1 day ago