An eruption of highly magnetized plasma known as a coronal mass ejection on the sun.
Dazzling images of the sun
(Image credit: NASA)
Coronal rain caused by plasma on the surface of the sun.
Solar Orbiter captures giant solar eruption.

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An eruption of highly magnetized plasma known as a coronal mass ejection on the sun.
Dazzling images of the sun
(Image credit: NASA)
Coronal rain caused by plasma on the surface of the sun.
Solar Orbiter captures giant solar eruption.

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“The Magnetic Field of our Active Sun” by Andrew McCarthy.Â
Courtesy of Royal Museums Greenwich
(NASA/Goddard) Â Fiery Looping Rain on the Sun
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.
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.
The footage in this video was collected by the Solar Dynamics Observatory's AIA instrument. SDO collected one frame every 12 seconds, and the movie plays at 30 frames per second, so each second in this video corresponds to 6 minutes of real time. The video covers 12:30 a.m. EDT to 10:00 p.m. EDT on July 19, 2012.Â
Music: "Thunderbolt" by Lars Leonhard, courtesy of artist. Â http://www.lars-leonhard.de/
Like our videos? Subscribe to NASA's Goddard Shorts HD podcast: http://svs.gsfc.nasa.gov/vis/iTunes/f...  Â
Clearest images of sun's atmosphere yet show coronal rain and dancing plasma
New technology removes blur to show the roots of solar storms that can affect Earth
Coronal rain forms when hotter plasma in the sun’s corona cools down and becomes denser. Because the plasma is electrically charged, it follows the magnetic field lines, which make huge arches/loops, instead of falling in a straight line. The scientists show that the strands can be narrower than 20 kilometres.
This image of a prominence above the solar surface is a snapshot of a four-minute time-lapse movie that reveals its rapid, fine and turbulent restructuring. The sun’s fluffy-looking surface is covered by 'spicules,' short-lived plasma jets. The streaks on the right show coronal rain falling down onto the sun’s surface.
Dynamic prominence with large-scale twist alongside the raining coronal material.
New images that are the highest resolution ever taken of the surface of the sun and its corona will help scientists solve mysteries about how storms on the sun develop. This could improve space weather forecasts and help prevent disruptions to technology on Earth.
Anyone who has seen a total eclipse of the sun has been witness to the glowing halo around our star known as the corona. This envelope of extremely hot gas extends millions of kilometres out into space and is where violent eruptions take place. These bursts of electrically charged gas can blow off the sun and reach all the way to Earth, affecting satellites and power grids.
This glosses over one of the big mysteries about the sun. Scientists have not been able to entirely understand why the corona can be many times hotter than the surface of the sun itself. Something is pumping energy into the sun's atmosphere. One problem has been the dearth of observations of the corona at its base, where it meets the surface and where the violent activity originates. Nature provides brief glimpses during solar eclipses when the moon covers the bright surface of the sun allowing the dimmer corona to shine through, but continuous observations have been more difficult. Â
Telescopes on the ground trying to study weather on the sun have been hampered by our own weather. Turbulence in our atmosphere blurs images through the same effect that makes stars twinkle at night. Â
Now, however, new adaptive optics on the 1.6 metre Goode Solar Telescope in California has reduced the shimmering effect of our atmosphere by a factor of ten. This improvement allows us to see features at 63 kilometre resolution, which is closer than ever before. The trick was a flexible mirror that changes shape 2200 times per second, compensating and correcting for atmospheric distortion as it happens.
This has resulted in the highest resolution images and movies ever made of the boundary between the surface of the sun and the corona.Â
The stunningly beautiful images reveal what looks like a fluffy surface on the sun with giant loops of material rising up, seemingly dancing and twisting with the sun's magnetic field. Meanwhile, cooler coronal raindrops, which can be narrower than 20 kilometres wide, fall back down. The observations also show something scientists have never seen before: a plasma stream they're calling a "plasmoid" moving across the solar surface at 100 kilometres per second.
This is the region where solar flares and coronal mass ejections produce giant blobs of electrically charged material many times larger than the Earth, which blast off the sun and strike our planet's magnetic field. The result is beautiful northern and southern lights, but also a damaging effect on electronics in satellites and power surges in electrical grids causing blackouts.
A dramatic example of this effect came in 1989 when a coronal mass ejection caused the Quebec power grid to shut down, casting most of the province into darkness for nine hours. Since then, power systems have been hardened against such events, but with more dependence on GPS satellites, navigation systems could still be interrupted. Even astronauts on the International Space Station need to seek shelter in their spacecraft to avoid the harmful radiation effects of solar flares. Future astronauts on the moon will be under similar threats from solar storms.
Predicting violent solar events is challenging because the surface of the sun is a complicated, violent place that is ever changing, partly due to the fact that the equator of our star rotates faster than the poles. This causes turbulence in the hot gasses and twists the powerful magnet field into loops that can snap, releasing material into space. The sun also goes through cycles every 11 years where solar activity waxes and wanes. We are in a period of solar maximum at the moment, so monitoring its activity is important.
These new corrective lenses, which can also be fitted to other solar telescopes, will enable scientists to dive into the mystery of why the corona is so hot and how solar disturbances originate. This could improve predictions in space weather so warnings can be issued earlier.
As with weather on Earth, an accurate long-term weather forecast can be vital. Hopefully this will mean we see space weather coming more clearly.
— Bob McDonald, CBC
High-resolution observations of fine structure in the Sun’s corona hint at plasma features on the order of 10 km. A new adaptive optics syst
New images that are the highest resolution ever taken of the surface of the sun and its corona are revealing details that have never been se
An article being published in the journal 'Astronomy & Astrophysics' reports a study of what were compared to shooting stars, observed in de
An article being published in the journal "Astronomy & Astrophysics" reports a study of what were compared to shooting stars, observed in details never obtained before together with the solar corona. A team of researchers coordinated by Northumbria University in Newcastle used observations conducted by ESA's Solar Orbiter space probe to study what are actually clumps of plasma that can be up to 250 kilometers wide, a coronal rain that falls on the surface of the Sun. That plasma heats up to a few million degrees, a state that lasts a few minutes during the fall until it condenses following its quick drop in temperature.

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Pluto Collapse Confirmed, Stellar Explosion Mechanism | S0 News Oct.5.2021
Pluto Collapse Confirmed, Stellar Explosion Mechanism | S0 News Oct.5.2021
Suspicious0bservers Today’s Featured Links: Pluto Confirmed: https://www.swri.org/press-release/sc… Pluto Surface: https://arxiv.org/pdf/2110.00662.pdf Pluto Questioned (Iran): https://www.aanda.org/articles/aa/ful… Rutgers Snow Lab: http://climate.rutgers.edu/snowcover/… Active Fires Video: https://svs.gsfc.nasa.gov/4945 Coronal Rain: https://arxiv.org/pdf/2110.01287.pdf…
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NASA | Fiery Looping Rain on the Sun
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.Â
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.Â
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.
The footage in this video was collected by the Solar Dynamics Observatory's AIA instrument. SDO collected one frame every 12 seconds, and the movie plays at 30 frames per second, so each second in this video corresponds to 6 minutes of real time. The video covers 12:30 a.m. EDT to 10:00 p.m. EDT on July 19, 2012.Â
Music: "Thunderbolt" by Lars Leonhard, courtesy of artist. Â http://www.lars-leonhard.de/Â
This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/goto?11168
Source
(NASA/Goddard) Â Fiery Coronal Rain on the Sun
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. 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. The footage in this video was collected by the Solar Dynamics Observatory's AIA instrument. SDO collected one frame every 12 seconds, and the movie plays at 30 frames per second, so each second in this video corresponds to 6 minutes of real time. The video covers 12:30 a.m. EDT to 10:00 p.m. EDT on July 19, 2012. Music: "Thunderbolt" by Lars Leonhard, courtesy of artist. http://www.lars-leonhard.de/
Source