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Prominence

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Prominences
Related Category: Astronomy: General
see chromosphere.
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Chromosphere - (kr´msfr´´) [Gr.


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Definition: prominence: A strand of relatively cool gas in the solar corona which appears bright when seen at the edge of the Sun against the blackness of space.
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You can see the prominence form, rise up, and then erupt away into space over the course of one day, on October 6-7, 2012. Sometimes this material rains back down to the surface, and sometimes it escapes entirely.

A prominence is a large bright feature extending outward from the Sun's surface, often in a loop configuration. Prominences are anchored to the Sun's surface in the photosphere, and extend outwards into the Sun's corona.

A Solar Prominence
An arched prominence lifts off from the Sun, propelled by magnetic forces. This image was taken by the Skylab Space Station. It shows the Sun in ultraviolet light.
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A prominence is made up of relatively cold, dense plasma supported by the local magnetic field from falling back into the sun. They can survive like this for 200 days. The temperature of the plasma in a prominence is about 5000 K.

SOLAR PROMINENCE
A solar prominence (also known as a filament) is an arc of gas that erupts from the surface of the Sun. Prominences can loop hundreds of thousands of miles into space.

Prominences
Prominences are dense clouds of material suspended above the surface of the Sun by loops of magnetic field.

Prominence is a structure in the Sun's corona consisting of cool plasma supported by magnetic fields. Prominences are bright structures when seen over the solar limb, but appear dark when seen against the bright solar disk.

prominence Loop or sheet of glowing gas ejected from an active region on the solar surface, which then moves through the inner parts of the corona under the influence of the Sun's magnetic field.

prominence: Complex structures of relatively cool, dense solar material that extend into the outer chromosphere and inner corona. They are generally static and believed to be supported by magnetic forces.

prominence -- a large-scale gaseous formation above the surface of the Sun.

Prominence. A term identifying cloud-like features in the solar atmosphere. The features appear as bright structures in the corona above the solar limb and as dark filaments when seen projected against the solar disk.

Prominence, solar- a loop of cooler gas seen above the sun's surface, which sometimes erupts outwards into space
Proton- a positively charged particle that forms part of the nucleus of an atom ...

PROMINENCE - Structure that occurs above the photosphere of the Sun. Prominences may reach high into the corona, often as graceful loops that may hang suspended for many days.

prominence
A looping column of gas ejected from the surface of the Sun.
protoplanet
The initial stage of planetary formation. A protoplanet is a small clump of material that may accumulate material to become a planet.

Prominence
Eruptions of the solar surface. Visible during total solar eclipses.
Proper Motion ...

Prominence
an explosion of hot gas that erupts from the Sun's surface. Solar prominences are usually associated with sunspot activity and can cause interference with communications on Earth due to their electromagnetic effects on the atmosphere.

Prominences. A mass of glowing gas, mainly hydrogen, that rises from the surface of the Sun.
Proper motion. The movement of an individual star on the celestial sphere.

PROMINENCE
A feature of the lower part of the solar corona which when observed in the red line of hydrogen at 653nm (Ha), look like flames leaping up from the surface of the Sun.

Prominence - A region of cool gas embedded in the corona. Prominences are bright when seen above the Sun's limb, but appear as dark filaments when seen against the Sun's disk ...

Prominence A cloud of cooler plasma extending high above the Sun"s visible surface, rising above the photosphere into the corona.

Prominence
A region of cool (104 K), high-density gas embedded in the hot (106 K), low-density Solar corona. Prominences are the flamelike tongues of gas that appear above the limb of the Sun.
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Rise to prominence
Alcibiades first rose to prominence when he began advocating aggressive Athenian action after the signing of the Peace of Nicias
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Prominence
An eruption of gas from the chromosphere of a star. Solar prominences are visible as part of the corona during a total solar eclipse.

Prominence:
Cloud of gas elevated above the solar surface.
Proper motion:
The apparent drift of a star across the sky, compounded from the motion of the star and the sun.

prominence - (n.)
Solar gas protruding over the limb, visible to the naked eye only at eclipses but also observed outside of eclipses by its emission line spectrum. Prominences are at approximately the same temperature as the chromosphere.

A prominence beginning to erupt on the Sun's limb, caused by a cascade of rippling Alfven waves sparked by small-scale flares. Image: NASA/SDO/AIA.

A prominence seen in projection on the Solar disk. [H76]
Filar Micrometer
An instrument used with a telescope for visually measuring small angular separations (as between binary stars). [H76]
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Sun Prominence
This image was acquired from NASA's Skylab space station on December 19, 1973. It shows one of the most spectacular solar flares ever recorded, propelled by magnetic forces, lifting off from the Sun.

A solar prominence as seen by SOHO. Image credit: Solar and Heliospheric Observatory (SOHO). SOHO is a project of international cooperation between ESA and NASA.

Finally, solar prominences rise up through the chromosphere from the photosphere, sometimes reaching altitudes of 150,000 kilometers. These gigantic plumes of gas are the most spectacular of solar phenomena, aside from the less frequent solar flares.

See also: See also: Earth, Sun, Astro, Solar, Period

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