The Red Planet has attracted mankind like no other celestial body. While traveling to this world can only electronic and mechanical machines, but because of them the opportunity to look at what is out there, is not available to the naked eye on the surface located millions of miles (the distance from Earth to Mars varies between 56-400 million km) of the planet . Interestingly all: how Mars was before (found that once existed waters) whether and what kind of life that lies beneath the surface now.
In a special edition of January there was a picture of the planet Icarus, made a high-resolution camera HiRISE orbiting planet machine Mars Reconnaissance Orbiter (MRO). In the image areas near the north pole of the structure can be seen that an uninitiated person can easily take to trees or shrubs. But scientists claim that this is just an optical illusion — in fact, "trees" are dark basaltic material shed on the surface of the sun-warmed sand dunes of frozen carbon dioxide, or dry ice. As explained team member Candy Hansen MRO (Candy Hansen) from the University of Arizona (University of Arizona), a heat sublimation, and the ice turns into a gaseous state.
Dunes form a nearly completed ring around the north pole of Mars and covered with a thin layer of reddish dust and patches of dry ice. To date, there is no direct evidence of any biological forms in the past and in the present. With the arrival of the Martian spring sun warmed the ice appearing gas scatters the surrounding dust and soil particles. "We believe that the dark sand slides down the bright parts of the frozen dunes" — says Hansen. This illusion — not the first, exciting the imagination of the world's population. In 1976 he sent the machine Viking 1 image rock formation was made so that it was impossible not to notice the similarities with the person. Despite the new image, proving the play of shadows and light on one of the most famous photographs, discussions on the subject still does not stop.
There were other illusions made by the orbiter and rovers images, including object resembling a rabbit and stone, similar to the figure of a man.
"Poles" in the picture MRO seem "grow" out of the dunes, however, as Hansen says, "you look at the slopes of the dunes, and where the sand stops, it forms a kind of borders in the form of scallops at the bottom." Each band reaches a length of 50 m HiRISE captures dust emissions, and if you look closely, you can find small dust clouds cast a shadow.
On water on Mars we have mentioned, but it looks like a canyon once filled with water.
The edges of the crater Victoria — "home" dune — under the influence of erosion have changed the shape.
That's it look like dunes of sand material in the crater Noachis Terra. Each is very similar to the next, including rust-colored stripes on the north-eastern slopes. As expected, the symmetry provide wind. Large boulders carpet the spaces between the sand dunes.
These spectacular education — as a result of erosion. On Mars, without vegetation, with very low air pressure, erosion processes are different than on Earth.
If on the red planet will ever be "tourists", they will be able to watch the huge canyons. One of them — Valles Marineris length of 4000 km and a width of more than 160 kilometers — just "swallowed" to the famous Grand Canyon in the U.S. state of Arizona (length — 446 km). Mars also has a huge volcano Mount Olympus 27127 m height — three times higher than Mount Everest.
The crater of a long extinct volcano Albor Tholus has a diameter of 30 km.
The slopes are covered with reddish crescent ice and dark dust.
Speakers rocky rocks at the south pole of Mars (left) and a giant crater.
The picture of the lander Phoenix January 6 of this year. Starting from January 18, NASA will check if the machine does not give signs of life. The unit has completed a mission to the red planet in November 2008 and has since been considered a non-functioning. However, there is a small chance that the equipment withstand the harsh weather conditions of the polar winter with frozen carbon dioxide on the surface of the earth (the layer thickness can be up to 30 cm). With the advent of spring ice sublimes and becomes a gas for several months. If the solar panels will generate enough energy, Phoenix tries to connect to any available spacecraft in Mars orbit to relay data to Earth.
In the picture — recently appeared impact crater with extensive radial ejection, who first recorded the camera MRO CTX. Previously, the site was removed one of the "Vikings", and the crater was not there. It was formed in the interval between 1976 and 1999, or the same in 1976 at the surface was too much dust. Another option — a review closed opaque air.
18.01.2010 [8:00] No Comments