Probe OSIRIS-Rex sent a signal about the presence of water on the asteroid Bennu
Work spacecraft OSIRIS-REx, launched in September 2016 to study the asteroid Bennu, began to bear fruit. The probe has reached the orbit of a space object as recently as December 3, but found the water on the asteroid's surface. According to researcher Amy Simon, we are not talking about water in its pure form, but only the presence of "gidrosoderzhaschih minerals." Discovery did not surprise the scientists, but they made one important conclusion.
According to them, the material of which is Bennu, once interacted with water. Most likely, an asteroid broke away from a larger space object on the surface of which was a lot of water in the liquid state. This large object can be compared with a Ceres, part of which is a thick layer of ice.
Researchers believe that the minerals in the water content scattered all over the area of the object. However, they also believe that liquid water on its surface was not. The assumption is associated with the small size of the asteroid - diameter is only 550 meters. Despite its small size, the asteroid Bennu hazardous to our planet. Its orbit intersects Earth's orbit, and the probability of collision is 1 to 4000. The fall of an asteroid can cause an explosion capacity of about 2,700 megatons. The presence of oxygen and hydrogen on the surface of the clay has been found two spectrometers. In addition to these, OSIRIS-REx have a camera, a laser device for determining the height and the mechanical arm. With the help of robotic arm, scientists want to take soil samples up to 2 kg. This will happen in 2020, and in 2023 with samples of the capsule will be returned to Earth for careful study of the collected material.
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