The surface of comet chori is softer than cappuccino foam.

A study revealed that the robot “Feli” jumped twice on the surface of comet “Chori” six years ago, before landing completely, to find that this surface consists of a mixture of ice and dust “more soft than the foam of a cappuccino drink.”
Lawrence O’Rourke of the European Space Agency, the author of the study, explained that the site where “Fellay” landed was “the last puzzle to be solved” regarding the robot launched by the European space probe “Rosetta” on the surface of the comet “Churyumov-Gerasimenko”, or “Chori”. », In November 2014, about 500 million kilometers from the planet.
It was known that a technical defect made “Philae”, upon touching the surface of the comet for the first time, leap to another location for two hours, before finally settling at a distance of 30 meters.
The final location was not determined until about two years later, when one of the “Rosetta” cameras, who was still in orbit, detected the presence of “Velay” in it and was hidden in the shade, with no sunlight necessary to continue its activity, which made him fall into an eternal slumber.
The pictures attached to the study, published by Nature magazine, showed that the surface of the Chori was “very soft,” as O’Rourke described, “more soft than cappuccino foam, waves or bubble baths.”
The results of the study contribute to enhancing the knowledge of this comet, which was formed 4.5 billion years ago, and to form a greater idea of ​​”how hard the surface of comets is in preparation for sending other compounds” to land on them, and does not meet the fate of “Philae”, according to Matt Taylor, another scientist from the “Rosetta” mission. .