New drill samples taken by the NASA-rover Curiosity show that Mars is red on the surface only; the inside of the planet is gray blue.
For the past five months, the Curiosity, a NASA Mars Rover, has been driving around the slopes of Mount Aeolis Mons in the Pahrump Hills area of Mars.
Here the rover must gather material that can explain how and why Mars changed millions of years ago from a wet to a dry planet.
When the first shovel went to the ground of Marsin, however, the robber encountered a surprise: below the surface the red planet is not red, but blue.
Mars's surface is rusty according to NASA
According to researchers, the red color on the surface is caused by the iron in the soil rock reacting with oxygen in the air and causing it to rust.
Under the surface, on the other hand, the rock is protected against the atmosphere of Mars, and the sample that was taken is gray blue.
When the Curiosity drilled three small holes in the surface, it turned out that the interior of Mars consists of very different substances than the top, red layer.
The Curiosity sent this image to the earth, on which it can be seen that the ground under the red surface is gray blue. Photo: NASA / JPL-Caltech / MSSS
NASA: Mars is rich in the silicon element
The researchers have known for years that Mars mainly consists of silicon and oxygen, and in addition iron, magnesium, aluminum, calcium and potassium.
The scientists investigated the chemical composition of the new sample using the instruments of the Curiosity. Especially the silicon content turned out to be considerably higher than expected.
In the coming period, the samples are likely to be examined in a laboratory called Sample Analysis at Mars (SAM) Instrument Suite, which will allow scientists on earth to subject them to further study.
Take the quiz: Are you ready for Mars?
The six-wheeled rover was sent to Mars in 2011 by the American space agency NASA, and landed in March 2012 in the Galekrater. Here he must, among other things, take samples to determine the elements in the soil.
Weight: 899 kg (incl. 75 kg of scientific equipment) Length: 2.7 meters Top speed: 90 m / h