Why is a day on Mars called a sol? A Year on Mars What is a solo in the film The Martian

Many people heard the word SOL for the first time while watching the movie The Martian. In this film, the main character remains on Mars and spends a decent number of years there alone. One day on Mars are calculated by the concept SOL. Martian day bit longer than a day on Earth. One Martian SOL is equal to 24 hours and 39 minutes.

P.S: Alone, the hero of the film The Martian, Mark Watney, spent 500 Martian days on Mars. Many people say that it is impossible to survive on Mars for so long. I agree with this opinion (an ordinary person would go crazy), but in our case we are talking about cinema - and in cinema absolutely everything is possible)

The word Sol has several meanings, but as is clear from the question, we are talking about Martian days. So sol is a Martian day, which is:

Then it turns out that 1 sol is equal to 1.02595675 Earth days. A year on Mars is 669.56 sols or 686.94 Earth days. Source of information: iki.rssi.ru

Sol is a unit of time equal to one solar day on Mars, that is, the average period between the two upper culminations of the daylight. The duration of a sol is 24 hours 39 minutes 35.244 seconds, which is 2.75% longer than an Earth day.



Sol (salt, sol) is 1 Martian day, which lasts 40 minutes longer than Earth's. It seems that it is not so much, but for those who are accustomed to living according to the usual 24-hour cycle, this will become very noticeable.

Just like we have a day on our planet, the same concept only with a different name Sol on the planet Mars. Only our day includes 24 hours, and in salt it is a little more - 24 hours and 39 minutes. Therefore, 1 year on the planet Mars is equal to 365 * 24.39 = 670 sols (approximately).



Those who watched the movie The Martian are asking this question. This is a unit of time. Sol is a Martian day. They are slightly longer than our earthly ones and are 24 hours, 39 minutes, 35.244 seconds. And what’s even more surprising is that 1 year on Mars is equal to 669.56 sols or 686.94 Earth days.

The question is very multifaceted, because the word Sol has several meanings.

So, this word is a fairly common male name. For example, Bamba Sol is a famous football player, Sol Spiegelman is an American scientist, biologist, and so on.

Sol is also a beautiful SkyClan cat from Jingo's pack. He is very strong, handsome and powerful.



And this wonderful cat can speak beautifully.

A sol is also the length of one day on the planet Mars, which is 24 hours and 39 minutes. And to be more precise, then

Oh yes, I almost forgot. There is also this word in mythology, or rather, the name. Sol was the god of the ancient Romans. Similar to Janus, but it was an independent god. Sun God.

So, choose the meaning of this word that suits you best).

The word sol came into our reality when a film appeared on our screens called The Martian. The essence of the film is that the hero goes to the planet Mars and lives there in complete isolation for many years. One day on Mars is designated by the concept -sol.

And they are longer than a normal Earth day.

One sol is twenty-four hours and thirty-nine minutes. And in the film The Martian, the hero lived on Mars for only five hundred days according to his calculation. Martian days are almost three percent longer than Earth days.

This kind of time calculation exists on Mars, and now they have begun to use such a word.

Sol is the duration of the average solar Martian day (in the sense of the duration of the average solar day on the planet Mars). The duration of a sol is 24 hours 39 minutes 35.24409 seconds of Earth time, which is 2.7% longer than our Earth day. A year on Mars lasts 668.6 sols (Martian solar days)



Sol is the Martian solar day. The length of a day is 24 hours and 39 minutes. On planet Earth, a day is equal to 24 hours, 3 minutes and 56.5554 seconds.

The concept of Sol was introduced for convenience in operating mode. Those who have been working on the surface of Mars for a long time with various devices.

On Mars, a year lasts 686.94 Earth days or 669.56 sols.

At the moment, abbreviations for the year on the planet Mars have not yet been established, but soon, I think, a suitable name will be found for it.

From this article you will learn about the concept of kSol/s, what it is and what 1 kSol/s in H/s is equal to. Let's take a closer look at this using the example of a pool.

The kSol/s value indicates the current power at . Accordingly, the higher this number, the better. In the screenshot, it is equal to only 6% of the total network power, and over time this figure changes depending on how many people are mining through this pool. The greater the power on the bullet, the more likely it is to find a block.

At the moment, it is impossible to find more than 6% of the total number of blocks in the pool, and if you divide the value by the power of other miners relative to your own, you can find out the probability of finding a block.

Net Hash is equal to 419,494.81 kSol/s - this is the total power of the network (or the speed at which all devices within it operate).

What is 1 kSol/s equal to H/s

Also, many are interested in the question “How to convert sols/s to h/s.” In fact, 1 kSol/s s is equal to 1 H/s. Sol is the solution, H is the hash. In fact, these are two names with the same meaning.

The problem of synchronizing clocks and calendars on Earth and on Mars became quite acute when the era of exploration of Mars by automatic machines began, since it was necessary to clearly know the flow of solar energy throughout both the day and the year on Mars. In this article, I propose to consider the existing methods of counting time on Mars.
Since the inclination of the axis of rotation of Mars to the orbital plane differs little from that of the Earth (23°26"21"" (Earth) and 25°11"24"" (Mars)), it undergoes similar seasonal periods, but since the eccentricity of the orbit of Mars is significantly greater , then the durations of the periods are quite different. Also, if the Martian days are close in duration to the Earth's, then the length of the year is different, which further increases the desynchronization between the calendars.

A day on Earth and Mars

A year on Earth and Mars

Calendar

Here on Earth, we tend to take time for granted, never considering that the increments in which we measure it are quite relative.

For example, the way we measure our days and years is actually a result of our planet's distance from the Sun, the time it takes to revolve around it, and to rotate on its own axis. The same is true for other planets in our solar system. While we Earthlings calculate the day in 24 hours from dawn to dusk, the length of one day on another planet differs significantly. In some cases, it is very short, while in others, it can last more than a year.

Day on Mercury:

Mercury is the closest planet to our Sun, ranging from 46,001,200 km at perihelion (closest distance to the Sun) to 69,816,900 km at aphelion (farthest). Mercury takes 58.646 Earth days to rotate around its axis, meaning that a day on Mercury takes approximately 58 Earth days from dawn to dusk.

However, it takes Mercury only 87,969 Earth days to circle the Sun once (aka its orbital period). This means that a year on Mercury is equivalent to approximately 88 Earth days, which in turn means that one year on Mercury lasts 1.5 Mercury days. Moreover, Mercury's northern polar regions are constantly in shadow.

This is due to its axial tilt of 0.034° (compared to Earth's 23.4°), which means Mercury does not experience extreme seasonal changes where days and nights can last for months, depending on the season. It is always dark at the poles of Mercury.

A day on Venus:

Also known as "Earth's twin", Venus is the second closest planet to our Sun - ranging from 107,477,000 km at perihelion to 108,939,000 km at aphelion. Unfortunately, Venus is also the slowest planet, a fact that is obvious when you look at its poles. Whereas the planets in the solar system experienced flattening at the poles due to their rotational speed, Venus did not survive it.

Venus rotates at a speed of only 6.5 km/h (compared to Earth's rational speed of 1670 km/h), which results in a sidereal rotation period of 243.025 days. Technically, this is minus 243.025 days, since Venus's rotation is retrograde (i.e., spinning in the opposite direction of its orbital path around the Sun).

Nevertheless, Venus still rotates around its axis in 243 Earth days, that is, many days pass between its sunrise and sunset. This may seem strange until you know that one Venusian year lasts 224,071 Earth days. Yes, Venus takes 224 days to complete its orbital period, but more than 243 days to go from dawn to dusk.

Thus, one Venus day is slightly more than a Venusian year! It's good that Venus has other similarities with Earth, but it's clearly not a daily cycle!

Day on Earth:

When we think of a day on Earth, we tend to think of it as simply 24 hours. In truth, the sidereal rotation period of the Earth is 23 hours 56 minutes and 4.1 seconds. So one day on Earth is equivalent to 0.997 Earth days. It's strange, but then again, people prefer simplicity when it comes to time management, so we round up.

At the same time, there are differences in the length of one day on the planet depending on the season. Due to the tilt of the Earth's axis, the amount of sunlight received in some hemispheres will vary. The most striking cases occur at the poles, where day and night can last for several days and even months, depending on the season.

At the North and South Poles during winter, one night can last up to six months, known as the "polar night". In summer, the so-called “polar day” will begin at the poles, where the sun does not set for 24 hours. It's actually not as simple as I would like to imagine.

A day on Mars:

In many ways, Mars can also be called “Earth’s twin.” Add seasonal variations and water (albeit frozen) to the polar ice cap, and a day on Mars is pretty close to a day on Earth. Mars makes one revolution around its axis in 24 hours.
37 minutes and 22 seconds. This means that one day on Mars is equivalent to 1.025957 Earth days.

Seasonal cycles on Mars are similar to ours on Earth, more than on any other planet, due to its 25.19° axial tilt. As a result, Martian days experience similar changes with the Sun, which rises early and sets late in the summer and vice versa in the winter.

However, seasonal changes last twice as long on Mars because the Red Planet is at a greater distance from the Sun. This results in a Martian year lasting twice as long as an Earth year—686.971 Earth days or 668.5991 Martian days, or sols.

Day on Jupiter:

Given the fact that it is the largest planet in the solar system, one would expect the day on Jupiter to be long. But, as it turns out, a day on Jupiter officially lasts only 9 hours, 55 minutes and 30 seconds, which is less than a third of the length of an Earth day. This is due to the fact that the gas giant has a very high rotation speed of approximately 45,300 km/h. This high rotation rate is also one of the reasons why the planet has such strong storms.

Note the use of the word formal. Since Jupiter is not a solid body, its upper atmosphere moves at a different speed than at its equator. Basically, the rotation of Jupiter's polar atmosphere is 5 minutes faster than that of the equatorial atmosphere. Because of this, astronomers use three reference frames.

System I is used in latitudes from 10°N to 10°S, where its rotation period is 9 hours 50 minutes and 30 seconds. System II is applied at all latitudes north and south of them, where the rotation period is 9 hours 55 minutes and 40.6 seconds. System III corresponds to the rotation of the planet's magnetosphere, and this period is used by the IAU and IAG to determine the official rotation of Jupiter (i.e. 9 hours 44 minutes and 30 seconds)

So, if you could theoretically stand on the clouds of a gas giant, you would see the sun rise less than once every 10 hours at any latitude of Jupiter. And in one year on Jupiter, the Sun rises approximately 10,476 times.

Day on Saturn:

The situation of Saturn is very similar to Jupiter. Despite its large size, the planet has an estimated rotation speed of 35,500 km/h. One sidereal rotation of Saturn takes approximately 10 hours 33 minutes, making one day on Saturn less than half an Earth day.

Saturn's orbital period is equivalent to 10,759.22 Earth days (or 29.45 Earth years), with a year lasting approximately 24,491 Saturn days. However, like Jupiter, Saturn's atmosphere rotates at different speeds depending on latitude, requiring astronomers to use three different reference frames.

System I covers the equatorial zones of the South Equatorial Pole and the North Equatorial Belt, and has a period of 10 hours 14 minutes. System II covers all other latitudes of Saturn except the north and south poles, with a rotation period of 10 hours 38 minutes and 25.4 seconds. System III uses radio emissions to measure Saturn's internal rotation rate, which resulted in a rotation period of 10 hours 39 minutes 22.4 seconds.

Using these different systems, scientists have obtained various data from Saturn over the years. For example, data obtained during the 1980s by the Voyager 1 and 2 missions indicated that a day on Saturn is 10 hours, 45 minutes and 45 seconds (±36 seconds).

In 2007, this was revised by researchers in UCLA's Department of Earth, Planetary and Space Sciences, resulting in the current estimate of 10 hours and 33 minutes. Much like Jupiter, the problem with accurate measurements stems from the fact that different parts rotate at different speeds.

Day on Uranus:

As we approached Uranus, the question of how long a day lasts became more complex. On the one hand, the planet has a sidereal rotation period of 17 hours 14 minutes and 24 seconds, which is equivalent to 0.71833 Earth days. Thus, we can say that a day on Uranus lasts almost as long as a day on Earth. This would be true if it were not for the extreme tilt of the axis of this gas-ice giant.

With an axial tilt of 97.77°, Uranus essentially revolves around the Sun on its side. This means that its north or south points directly toward the Sun at different times in its orbital period. When it is summer at one pole, the sun will shine continuously there for 42 years. When the same pole is turned away from the Sun (that is, it is winter on Uranus), there will be darkness there for 42 years.

Therefore, we can say that one day on Uranus, from sunrise to sunset, lasts as long as 84 years! In other words, one day on Uranus lasts as long as one year.

Also, as with other gas/ice giants, Uranus rotates faster at certain latitudes. Therefore, while the planet's rotation at the equator, approximately 60° south latitude, is 17 hours and 14.5 minutes, the visible features of the atmosphere move much faster, completing a complete rotation in just 14 hours.

Day on Neptune:

Finally, we have Neptune. Here, too, measuring one day is somewhat more complicated. For example, Neptune's sidereal rotation period is approximately 16 hours, 6 minutes and 36 seconds (equivalent to 0.6713 Earth days). But due to its gas/ice origin, the planet's poles replace each other faster than the equator.

Considering that the planet's magnetic field rotates at a rate of 16.1 hours, the equatorial zone rotates approximately 18 hours. Meanwhile, the polar regions rotate within 12 hours. This differential rotation is brighter than any other planet in the Solar System, resulting in strong latitudinal wind shear.

In addition, the planet's axial tilt of 28.32° leads to seasonal variations similar to those on Earth and Mars. Neptune's long orbital period means that a season lasts for 40 Earth years. But since its axial tilt is comparable to Earth's, the change in the length of its day over its long year is not so extreme.

As you can see from this summary of the various planets in our solar system, the length of the day depends entirely on our frame of reference. In addition, the seasonal cycle varies depending on the planet in question and where on the planet the measurements are taken.