Scientists first spot aurora around a comet

Scientists first spot aurora around a comet

The spectrograph installed aboard the Rosetta interplanetary station was able to record a unique glow in the ultraviolet spectrum that appeared around the Churyumov-Germasimenko comet. According to experts, the nature of this phenomenon may be exactly the same as in the case of auroras on earth.

Scientists have recorded for the first time aurora around a comet

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US specialists analyzing data from the ALICE ultraviolet spectrograph installed on board the Rosetta spacecraft have identified rather unusual emissions, like aurora borealis, that are outside the visible spectrum. It is noted that in the earth's atmosphere, such phenomena are formed in those cases when the planet's magnetic field redirects charged solar particles directly to the poles. At the poles, they collide with molecules and atoms contained in the atmosphere, resulting in the formation of multi-colored shimmering waves in the sky.

Scientists already know that there are auroras on many stars, planets and even smaller space objects, including those that do not have their own magnetic field, such as comet Churyumov-Gerasimenko. At the same time, the researchers note, the nature of the occurrence of such glow is always the same. For example, it is created around a comet due to charged particles of the solar wind during their interaction with the gas that surrounds the planet's core.

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