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Solar prominence seen in true color during totality of a solar eclipse. In solar physics , a prominence , sometimes referred to as a filament , [ a ] is a large plasma and magnetic field structure extending outward from the Sun 's surface, often in a loop shape.
The early evolution of CMEs is frequently associated with other solar phenomena observed in the low corona, such as eruptive prominences and solar flares. CMEs that have no observed signatures are sometimes referred to as stealth CMEs. [11] [12] Prominences embedded in some CME pre-eruption structures may erupt with the CME as eruptive prominences.
The hypothesis was based on the idea that a star passed close enough to the sun early in its life to cause tidal bulges to form on its surface, which along with the internal process that leads to solar prominences, caused material to be ejected repeatedly from the sun. Due to the gravitational effects of the passing star, two spiral-like arms ...
Solar prominences, explains NASA, are large, bright loops of plasma anchored to the Sun's surface in the photosphere — the visible surface of the Sun — that extend into the Sun's outer ...
A video clip of an erupting solar prominence, a CME. A prominence is a large, bright, gaseous feature extending outward from the Sun's surface, often in the shape of a loop. Prominences are anchored to the Sun's surface in the photosphere and extend outwards into the corona.
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NASA's Parker Solar Probe is intended to approach the Sun to a distance of approximately 9.5 solar radii to investigate coronal heating and the origin of the solar wind. It was successfully launched on August 12, 2018 [ 36 ] and by late 2022 had completed the first 13 of more than 20 planned close approaches to the Sun. [ 37 ]
An extreme storm, estimated at Dst −531 nT arose from a fast CME (mean ≈1500 km/s), occurred during the ascending phase of the minimum of the relatively weak solar cycle 14, which is the most significant storm on record in a solar minimum period. Aurora was conservatively observed to ≈44.1° ILAT, and widespread disruptions and ...