Posts Tagged ‘corona’

Solar Corona Revealed in Super-High-Definition

ScienceDaily (July 20, 2012) — Astronomers have just released the highest-resolution images ever taken of the Sun’s corona, or million-degree outer atmosphere, in an extreme-ultraviolet wavelength of light. The 16-megapixel images were captured by NASA’s High Resolution Coronal Imager, or Hi-C, which was launched on a sounding rocket on July 11th. The Hi-C telescope provides five times more detail than the next-best observations by NASA’s Solar Dynamics Observatory.

These photos of the solar corona, or million-degree outer atmosphere, show the improvement in resolution offered by NASA’s High Resolution Coronal Imager, or Hi-C (bottom), versus the Atmospheric Imaging Assembly on NASA’s Solar Dynamics Observatory (top). Both images show a portion of the sun’s surface roughly 85,000 by 50,000 miles in size. Hi-C launched on a sounding rocket on July 11, 2012 in a flight that lasted about 10 minutes. The representative-color images were made from observations of ultraviolet light at a wavelength of 19.3 nanometers (25 times shorter than the wavelength of visible light). (Credit: NASA)

“Even though this mission was only a few minutes long, it marks a big breakthrough in coronal studies,” said Smithsonian astronomer Leon Golub (Harvard-Smithsonian Center for Astrophysics), one of the lead investigators on the mission.

Understanding the Sun’s activity and its effects on Earth’s environment was the critical scientific objective of Hi-C, which provided unprecedented views of the dynamic activity and structure in the solar atmosphere.

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Little black spot on the sun visible with the naked eye

May 11, 2012 1 comment

Picture of the Day: May 10, 2012
LITTLE BLACK SPOT ON THE SUN TODAY | A sunspot visible with the naked eye at sunrise and sunset, photographed by Stefano DeRosa, via SpaceWeather.
New monster sunspot 1476 is beautifully active atmSunspot 1476 / Solar Update
Now one of the largest Sunspots in years, Region 1476 is currently in a great position for Earth directed Coronal Mass Ejections. The only problem has been producing a solar flare that would also in turn, generate a large plasma cloud. This could change in the days ahead. There will continue to be a chance for a major X-Class event.

the suns a bubbler today…&v=OSWcm6We8LU


MAR. 12: Massive triangle shaped hole in the Sun’s corona recorded by NASA

Don`t know what to say about this, it seems to have happened at the same time with the other solar event, posted here 2 posts back. You can see the other event at 1:20 in the lower left corner and pictures of this huge triangle on the SDO site…