These trees look like a row of light colored areas, but they don't appear in a row at the beginning. It is understood that these images were taken in 2008, and the 25 cm on the image is equivalent to the actual 0.6 mile (about 1 km). It's worth mentioning that some parts of the image look like smoke is drifting, which is actually because the sand is sliding down from the top when the photo is taken.
In another photo, most of the sand dunes in the northern part of Mars begin to emerge from the seasonal carbon dioxide ice covered in winter under the sunlight of spring. The steep sides of the sand dunes break through the ice like the top of the sand dunes, and the black sand begins to slide along the sand dunes. The black spot in the picture is the area where the ice first broke, from which the sand diffused. Soon, all the sand dunes will be exposed on the surface of Mars, and all the signs related to spring activities will gradually disappear.
Curiosity Mars rover is trying to learn more about the activity of sand dunes through the latest mission. In the past week, curiosity has not stopped sending the latest images to the earth. What we see from the images is the dark wavy surface.
These images mean that this is the first time humans have investigated the activity of sand dunes on another planet. NASA hopes these images will answer some questions about the interaction between sand dunes and wind in a low gravity environment.
Professor Nathan bridges, from Johns Hopkins University in the United States, who is in charge of dune activity, said: 'compared with the dunes on earth, these dunes on Mars have different textures. They ripple a lot more than the dunes on earth, and we don't know what makes the difference. '
He added: 'we now have models based on lower air pressure, but we need higher wind speeds to make the particles move. And now, at last, we have a chance to look at it in more detail. '
It has been reported that humans will land on Mars in 15 years, and NASA is about to start recruiting astronauts to land on Mars. By then, we will be able to get more detailed information about the planet.