Today is New Year’s Day on Mars | EarthSky.org

A nearly full reddish Mars seen from orbit, with a giant dark slash covering near a whole hemisphere.

This view of Mars exhibits the nice Martian canyon Valles Marineris. It’s as broad throughout because the continental U.S. and is usually referred to as the Grand Canyon of Mars. This picture is a mosaic created through the Viking 1 orbiter, which reached Mars in 1976. Picture through NASA.

Earth and Mars shaped collectively within the nice primordial nebula that additionally created our solar. Each Earth and Mars are about 4.5 billion years previous. However, simply as on Earth, a system of human timekeeping has been established on Mars. Earth’s mostly used calendar is the Gregorian calendar, inserting us within the yr 2021. The Mars calendar is far newer. The depend started at Mars Yr 1 , on the northern spring equinox of April 11, 1955. A serious mud storm on Mars raged within the second half of that Mars yr (generally referred to as the great dust storm of 1956). February 7, 2021, marks the beginning of Yr 36 on Mars. Comfortable Mars new yr!

Why label Mars years in any respect? Todd Clancy of the House Science Institute was the primary to explain a system for labeling Mars years, in a scientific paper published in the year 2000, describing temperature variations on the pink planet. He established the system in orbit to enumerate Mars years and to assist with knowledge comparisons. Within the years which have adopted Clancy’s paper, different scientists additionally started utilizing his system of Mars years, particularly those that research Martian local weather. Clancy and his co-authors described the selection of April 11, 1955 as “arbitrary”, however the 1956 nice mud storm – falling in Mars Yr 1 – supplies a handy marker.

Later, the system was prolonged by defining a Mars Yr 0 (starting Might 24, 1953), and so permitting for unfavourable yr numbers. That’s much like the usage of A.D. or B.C. within the Gregorian calendar (or, extra lately, CE or BCE).

The 2021 lunar calendars are here. Order yours before they’re gone!

A table showing the earthly start dates of the next 5 Mars years, 36 through 40.

As counted by earthly timekeepers, the present new yr on Mars – Yr 36 – begins on February 7, 2021. Simply as on Earth, a yr on Mars is outlined as a single orbit across the solar. A Martian yr lasts about 2 Earth-years (687 Earth-days). Thus the following Mars years will start on December 26, 2022. Picture through ESA.

ESA supplied these info about timekeeping on Mars.

One yr on Mars equals 687 Earth days. It takes virtually twice so long as our Earth to orbit the solar. This implies your age can be lots much less if you happen to lived on Mars! If you need to really feel youthful, simply divide your present age by 1.88 and casually point out to your folks that that’s your actual age … on Mars.

A Martian day is outlined, like on Earth, because the time it takes for the planet to make one revolution round its axis. That is referred to as a sol. A sol is barely barely longer than an Earth day: 24 hours and 39 minutes.

Mars has 4 seasons: winter, spring, summer season and autumn. They’re outlined by the planet’s place alongside its orbit across the solar. The Martian New Yr begins with the northern equinox (northern spring, southern autumn). As Mars travels by means of its yearly trajectory, the planet’s axial tilt causes the northern hemisphere to obtain extra daylight in the course of the northern summer season, and the southern hemisphere to obtain extra daylight in northern winter, similar to on Earth. In contrast to Earth’s seasons nevertheless, the seasons on Mars aren’t of equal lengths. It is because the orbit of Mars across the solar is extra elliptical than that of Earth. For instance, the northern hemisphere spring (southern hemisphere autumn) lasts the longest, 194 sols, and the northern hemisphere autumn (southern hemisphere spring) is the shortest season at 142 sols.

Mars’ elliptical orbit can have essential penalties. Throughout southern spring and summer season, Mars swings by the solar nearer and sooner. The ensuing improve in luminosity heats up the environment, inflicting turbulence to raise up very high quality particles from the Martian soil. Because of this, the second half of a Martian yr is usually marked by fierce mud storms that may generally turn into planet-wide.

Like on Earth, winters are chilly and summers are heat on Mars, however the planet’s general temperature is lots cooler, it has a yearly common temperature of minus 60 levels Celsius (-76 levels Fahrenheit). The planet experiences completely different climate phenomena all through the seasons. A climate phenomenon that reappears yearly across the southern spring and summer season is the Arsia Mons Elongated Cloud, a cloud of ice crystals that may attain as much as 1800 kilometers (1,100 miles) in size. It repeats for a minimum of 80 sols after which disappears once more throughout the remainder of the yr.

Infographic with drawings and text about the new year on Mars, and Mars timekeeping in general.

View larger. | This coming new yr on Mars – which begins February 7, 2021 – is designated as Yr 36. Picture through ESA.

Backside line: Yr 36 on Mars begins on February 7, 2021.

Read more from Wikipedia: Timekeeping on Mars

Via ESA

Deborah Byrd

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