# How long is a day and a year on saturn

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## We Finally Know How Long a Day on Saturn Is

Every planet in the Solar System takes a certain amount of time to complete a single orbit around the Sun. Here on Earth, this period lasts.

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Okay, maybe this is not a mystery you've pondered much. But the answer is really cool. You'd think this was one of those things astronomers have pinned down to the nanosecond. But in fact, nobody knows, and in reality no answer will ever fully suffice. A day on Earth is determined by how long it takes the planet to spin once on its axis. That's pretty easy to measure, because Earth's surface is solid. Just sit there for about 24 hours, 3 minutes and

For decades, it was a nagging mystery — how long does a day last on Saturn? Earth pirouettes around its axis once every 24 hours or so, while Jupiter spins comparatively briskly, once in roughly 9. And then there is Venus, a perplexingly sluggish spinner that takes Earth-days to complete a full rotation. Saturn has been stubbornly secretive about its days. Scientists long relied on other, ultimately misleading clues to figure out how fast the ringed world turns. Not until the Cassini spacecraft swooped, flipped and twirled through the Saturn system did scientists realize that the answer was outside the planet itself, etched into its icy rings. In the same way that a bell rings and creates pressure waves that jiggle our eardrums, a spinning Saturn produces gravitational oscillations that herd particles in the rings into filaments.

When you think of a day, you normally think of one cycle of daytime to nighttime. That is called a solar day. On Earth, a solar day is around 24 hours. That means some solar days on Earth are a few minutes longer than 24 hours and some are a few minutes shorter. Another way to measure a day is to count the amount of time it takes for a planet to completely spin around and make one full rotation. This is called a sidereal day.

Here on Earth, we to end to not give our measurements of time much thought. But when you consider the fact that increments like a year are entirely relative, dependent on a specific space and place, you begin to see how time really works. Here on Earth, we consider a year to be days. But the actual definition of a year is the time it takes our planet to complete a single orbit around the Sun. So if you were to put yourself in another frame of reference — say, another planet — a year would work out to something else.

## How long is a day on Saturn?

How Long Planets Take to Orbit the Sun - Solar Year of Other Planets as Compared to Earth

In theory, determining the length of a day on a planet is pretty straightforward—just measure how long it takes to make one full rotation. Doing that with the gas giant Saturn, however, has proven to be an astronomical headache., Washington: NASA's Cassini spacecraft has revealed that a day on Saturn is just over 10 and-a-half-hours-long, a finding that solved a long-standing mystery of solar system science. Using new data from the now extinct Cassini mission, scientists led by the University of California-Santa Cruz found that a year on Saturn is 29 Earth years.

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## 2 thoughts on “How long is a day and a year on saturn”

1. Every planet in the Solar System takes a certain amount of time to complete a single orbit around the Sun.