Latest photos of scenes never seen on Mars

In the latest images recorded, Mars is more like a 'creamy biscuit' than a red planet.

Danielson crater.In the winter, thin layers of carbon dioxide cover the sand dunes at the poles.In the spring, this ice evaporates and defrost occurs vertically from the bottom of the sand dune.This process "trapped" gases in the area between the ice and sand.As the ice melted, air gushed out from the cracks and dragged along the sand.That creates an image with a dark, cookie-like area next to the 'creamy' light.On the right side of the image are crescent-shaped sand dunes merged into 'wind ridges' of wind direction.Based on these images, the scientists identified secondary winds as the sand dune shaping factor.NASA's Mars Reconnaissance Orbiter also captured images at the 67.5km-wide Danielson crater located southwest of Mars.In the crater, rocks and sand were frozen after sticking together.The sand here is blue, scattered on the ridges.The amount of sediment in the crater has changed over the years with some areas not eroding while others have been completely wiped out.This causes undulating rock-like layers.(Photo: CNN).

The European Space Agency has recorded an image of the Korolev crater more than 80km wide near the northern pole of Mars.This week's image taken by the European Space Agency and the camera of the Roscosmos ExoMars Trace Gas Orbiter shows sand dunes in the North Pole on Mars.(Photo: CNN).

Curiosity reconnaissance robot captures Teal peak area on Mars.This is one of the recently released images of Mars.(Photo: CNN).

The cool lava leaves traces of sand dunes that travel along southeastern Mars that look like the symbols from Star Trek.(Photo: CNN).

Sunset on Mars on 25/4.(Photo: CNN).

NASA seismograph is measuring the strength of earthquakes on Mars for the first time on 6/4.

A river channel on Mars.(Photo: CNN).

Selfie photo of NASA's InSight satellite on Mars.(Photo: CNN).

The image of the Valles Marineris hemisphere of Mars is actually a composite of 102 photos taken by Viking spacecraft.The center of the region is the Valles Marineris gorge, which is more than 2,000 km long and 8 km deep.(Photo: CNN).

The Curiosity Mars exploration robot can also take selfies.Photo taken at Quela drill point in the Murray Buttes area below the summit of Sharp.(Photo: CNN).

Mars is not a flat and barren planet.Nili Patera is an area on Mars where sand dunes and ripples move constantly.(Photo: CNN).

The hematite-rich mineral clumps near the cram crater look like blueberries in photos taken by NASA's Opportunity robot arm.(Photo: CNN).

NASA photograph shows the change of the planet surrounded by dust caused by sandstorms.(Photo: CNN).

Sharp Peak, a hematite-rich mountain range on Mars.(Photo: CNN).

Ore layers and ice caps at the northernmost point of Mars.(Photo: CNN).

The image shows the northernmost region of Mars taken from two NASA satellites.(Photo: CNN).

The geographical morphology of Mars is created and strongly influenced by wind.(Photo: CNN).

A dust convection swept across the valley area below the Knudsen Mountains on Mars.(Photo: CNN).

A small crater about 1km wide in the southern hemisphere of Mars.Icy remains on the southern slope of the crater at the end of winter ready to spring.(Photo: CNN).

A volcanic crater about 30 meters wide has just been formed on Mars.(Photo: CNN).

Panoramic panorama of the eastern Martian skyline.(Photo: CNN).