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Thursday, March 23, 2017

“White spots on Ceres is mysteriously changed”


Data obtained using the HARPS spectrograph of the European southern Observatory, indicate that the white spots on the dwarf planet Ceres to vary in brightness. The changes are due not only to the what angle the light. At the moment experts are not able to pinpoint the cause of this phenomenon, but suggest that it indicates the evaporation of the substance from the surface of a celestial body.


photo: ru.wikipedia.org

“As soon as the Dawn probe has discovered on Ceres white spots, I was immediately interested in the opportunity to observe them from the Earth”, — quotes the words of astrophysicist Paolo Molaro the site of the European southern Observatory. A group of scientists under the leadership Molaro figured out how to change the brightness of the spots on Ceres, after studying the obtained HARPS spectrograph, which is able to obtain such information due to the Doppler effect. The researchers admit that the results were a surprise to them.

If the information is confirmed, it would mean that Ceres is different from Vesta and other asteroids of the Main belt is stronger than was believed until now: apparently, this planet reveals internal activity. In this case, the next task astrophysicists will be to find an energy source, leading to the continuous expiration of substance from the surface of the planet.

White spots on the dwarf planet attracted attention of both professional astronomers and many are quite far from science people right after in February 2015, were published on their first shots. They were received space station Dawn running to Ceres on 27 September 2007. Original unusual luminous dots were discovered in the crater of Akator, but upon closer inspection, they were also able to see in the crater bathed. The nature of these spots has long been a mystery, which allowed Amateurs to build the most fantastic theories about their origin, down to the activities of alien civilizations. However, astrophysics in the main consider much more “boring” version — it was long believed that staining was ice, but at the moment most similar to the truth is the assumption that they are salt — hydrated magnesium sulfate.

Ceres – closest to Sun and smallest of the currently known dwarf planet in the Solar system, the diameter of which is about 950 kilometers. It opened in 1801 by astronomer Giuseppe Piazzi and got its name after the Roman goddess of fertility.

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