cRAwler23
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dabei seit 2005
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07.11.2013 um 00:51![Youtube: NASA | Fiery Looping Rain on the Sun](/static/th/yt/HFT7ATLQQx8/hqdefault.jpg)
NASA | Fiery Looping Rain on the Sun
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Durch das Abspielen werden Daten an Youtube übermittelt und ggf. Cookies gesetzt.
Eruptive events on the sun can be wildly different. Some come just with a solar flare, some with an additional ejection of solar material called a coronal mass ejection (CME), and some with complex moving structures in association with changes in magnetic field lines that loop up into the sun's atmosphere, the corona.Aufnahmen vom Solar Dynamics Observatory's AIA instrument. Hier soll es um interessante Berichte, Videos und Bilder rund um die Sonne und ihrer Aktivitäten gehen, so auch über die anderer Sterne in unserer kosmischen Nachbarschaft. Natürlich auch alles von verschiedenen Sternenklassen und Größen oder ihrer sterblichen Endprodukte wie Neutronensterne, Quasare und schwarze Löcher.
On July 19, 2012, an eruption occurred on the sun that produced all three. A moderately powerful solar flare exploded on the sun's lower right hand limb, sending out light and radiation. Next came a CME, which shot off to the right out into space. And then, the sun treated viewers to one of its dazzling magnetic displays -- a phenomenon known as coronal rain.
Over the course of the next day, hot plasma in the corona cooled and condensed along strong magnetic fields in the region. Magnetic fields, themselves, are invisible, but the charged plasma is forced to move along the lines, showing up brightly in the extreme ultraviolet wavelength of 304 Angstroms, which highlights material at a temperature of about 50,000 Kelvin. This plasma acts as a tracer, helping scientists watch the dance of magnetic fields on the sun, outlining the fields as it slowly falls back to the solar surface.