Incredibly rare ‘snowy’ images of Mars show ‘winter wonderland’ covered in unique ‘cube-shaped snowflakes’

SNAPS of Mars in snow are quite rare, given how difficult they are to capture.

But they do give us a glimpse of what a future Martian colony might enjoy — or endure — during the winter holidays.

Cubed snow, icy landscapes and frost are all part of the Red Planet's coldest season.

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Cubed snow, icy landscapes and frost are all part of the Red Planet’s coldest season.
While Martian frost is much more common, the planet does see snow

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While Martian frost is much more common, the planet does see snowCredit: NASA/JPL-Caltech/University of Arizona
There are two types of snow on Mars

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There are two types of snow on MarsCredit: NASA/JPL-Caltech/University of Arizona
Martian snow is unique in that it is cube-shaped

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Martian snow is unique in that it is cube-shapedCredit: NASA/JPL-Caltech/University of Arizona
Korolev Crater has a 50 mile wide, one mile thick sheet of ice at the bottom

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Korolev Crater has a 50 mile wide, one mile thick sheet of ice at the bottomCredit: ESA/DLR/FU Berlin

The average temperature on the Red Planet is around -65°C (-85°F), falling as low as -123°C (-190°F) at the poles in winter.

Fortunately, winter only comes once every Martian year – which is two years on Earth.

While Martian frost is much more common, the planet does see snow.

Snow falls and deposits on the north and south poles of Mars, usually at night in extremely cold conditions and under thick cloud cover.

Although you don’t want to venture too close to the planet’s poles or you’ll be battling bitterly cold temperatures and katabatic winds.

While no region will see more than a few feet of snow, “enough is falling that you can snowshoe over it,” according to Sylvain Piqueux, a Mars scientist at Nasa’s Jet Propulsion Laboratory.

He added: “If you were looking for skiing, though, you’d have to go into a crater or a cliff face where snow could build up on a sloping surface.”

Mars is home to some astonishing landscapes.

Not least the Korolev crater, which has a 50 kilometer wide and one kilometer thick sheet of ice at the bottom.

The thick wedge of ice cover lasts all year – meaning Korolev could become a go-to destination for future astro-skaters.

The strangest things on Mars revealed

Is it really snowing?

There are two types of snow on Mars.

The first is ground-like snow made of water ice.

The other consists of carbon dioxide or dry ice.

The Martian air is so thin — over 100 times thinner than Earth’s — that water-based snow becomes a gas before it even touches the ground.

Whereas dry ice snow actually reaches the surface and settles.

Scientists have calculated that the dry ice-snow particles on Mars are roughly the size of a human red blood cell

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Scientists have calculated that the dry ice-snow particles on Mars are roughly the size of a human red blood cellCredit: NASA, Christine Daniloff/MIT News
While frost on Mars was first discovered in the 1970s by Nasa's Viking landers, the US space agency only discovered actual snow in 2003

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While frost on Mars was first discovered in the 1970s by Nasa’s Viking landers, the US space agency only discovered actual snow in 2003Credit: NASA/JPL-Caltech/University of Arizona

Martian snow is unique in that it is cube-shaped, according to Piqueux.

And instead of falling in a shower, it descends almost like fog.

“Because carbon dioxide ice has a symmetry of four, we know that dry ice snowflakes would be cube-shaped,” Piqueux said.

“Thanks to the Mars Climate Sounder, we can see that these snowflakes would be smaller than the width of a human hair.”

Scientists have calculated that the dry ice-snow particles on Mars are roughly the size of a human red blood cell.

While frost on Mars was first discovered in the 1970s by Nasa’s Viking landers, the US space agency only discovered actual snow in 2003.

Using a special tool that can detect light invisible to the human eye, the Mars Reconnaissance Orbiter detected the carbon dioxide snow falling to Earth.

Then in 2008, Nasa’s Phoenix lander descended within 1,000 miles of the North Pole and detected van ice snow falling to the surface with a laser instrument.

No pictures have ever been taken of snow falling on Mars.

Cameras on orbiting spacecraft cannot look deep enough through clouds to capture snowfall at night.

And rovers on the surface simply cannot survive the extreme cold.

That said, Nasa has nevertheless been able to provide stunning images of the Red Planet that painted a winter wonderland – but only when the snow has settled.

How long does it take to get to Mars?

It’s not that short a trip…

  • There is a huge distance between Earth and Mars, which means that any trip to the red planet will take a very long time
  • It is also made more complicated by the fact that the distance is constantly changing as the two planets rotate around the sun
  • The closest that Earth and Mars would ever be is a distance of 33.9 million miles – that’s 9,800 times the distance between London and New York
  • That’s really rare, though: the more useful distance is the average, which is 140 million miles
  • Scientists on Earth have already launched quite a few spacecraft to (or near) Mars, so we have a rough idea of ​​how long it will take with current technology
  • Historically, the trip has taken anywhere from 128 to 333 days – admittedly an enormous amount of time for humans to be on board a cramped spacecraft.