Showing posts with the label Solar System

Scientists conducted an experiment in the lab that explains why the Sun is sooooo hot!

Image: A plasma ejection during a solar flare. Immediately after the eruption, cascades of magnetic loops form over the eruption area as the magnetic fields attempt to reorganize. Source: Solar Dynamics Observatory, NASA One of the major mysteries of solar physics is why the Sun's corona, the outermost part of its atmosphere reaches temperatures of several million degrees Celsius . A "hot" path leading to a region of the solar atmosphere just below the corona, where sound waves and certain plasma waves move at the same speed, explains this effect. A team from the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) , a German national lab, developed a laboratory model and for the first time experimentally confirmed the theoretically predicted behaviour of these plasma waves – called Alfvén waves. This was done in an experiment using the molten alkali metal rubidium and pulsed high magnetic fields, as reported in the journal Physical Review Letters. In solar physics, it is now comm

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