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Latest Corona Stories

Great Idea Had by The Sun
2012-07-23 16:10:30

A light bulb-shaped eruption leaps from the Sun and blasts into space in this archival image from the ESA/NASA Solar and Heliospheric Observatory, SOHO. SOHO captured the scene on 27 February 2000, watching as a large filament rose from the Sun´s broiling atmosphere and evolved into the coronal mass ejection loop seen here. A coronal mass ejection — or CME — is a huge cloud of magnetised plasma ejected from the Sun´s atmosphere — the corona — and...

Art And Science Collide in New Solar Imaging Technique
2012-07-22 07:05:56

[ Watch the Video ] redOrbit Staff & Wire Reports - Your Universe Online In what can be described as a melding of astronomy and post-Impressionist art, one NASA solar scientist has developed a new technique that uses bright, bold colors to share information about the heating and cooling of various parts of the sun. Nicholeen Viall of the NASA Goddard Space Flight Center in Greenbelt, Maryland innovated this new method, which uses various hues splashed across a yellow background...

Solar Corona Captured In Highest Resolution Ever
2012-07-21 05:29:44

[ Video 1 ] | [ Video 2 ] redOrbit Staff & Wire Reports - Your Universe Online A telescope launched on board a NASA sounding rocket earlier this month has captured the highest-resolution images of the sun's corona, the US space agency announced on Friday. The 16-megapixel images of the million-degree atmosphere of the sun were captured in an extreme-ultraviolet wavelength of light by the High Resolution Coronal Images (Hi-C) telescope, according to the Harvard-Smithsonian Center...

Coronal Mass Ejection Unlikely To Reach Earth
2012-07-21 04:31:52

[ Watch the Video ] redOrbit Staff & Wire Reports - Your Universe Online A coronal mass ejection (CME) associated with a solar flare emitted early Thursday morning is unlikely to reach Earth, but it could affect one of the two Solar Terrestrial Relations Observatory (STEREO) satellites currently orbiting the sun, NASA officials posted on the agency's official website. According to the US space agency, the sun emitted a mid-level (M7.7) flare on July 19. The flare, which began at...

2012-07-20 06:20:24

WASHINGTON, July 20, 2012 /PRNewswire-USNewswire/ -- A telescope launched July 11 aboard a NASA sounding rocket has captured the highest-resolution images ever taken of the sun's million-degree atmosphere called the corona. The clarity of the images can help scientists better understand the behavior of the solar atmosphere and its impacts on Earth's space environment. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) "These revolutionary images of the sun demonstrate the key...

Plasma Waves Move Faster Than Shockwaves
2012-07-20 08:07:31

Lawrence LeBlond for redOrbit.com - Your Universe Online The Sun and the dynamic space weather system that envelops the Earth are what researchers are trying to get a better understanding of with the help of Heliophysics nuggets -- collections of early scientific results, new research techniques and instrument updates. More than 99 percent of the matter found in the universe resembles nothing like what we have here on Earth, according to scientists from NASA´s Goddard Space Flight...

2012-07-10 10:25:40

Dr. Venugopal Depala of Temecula and Corona, CA, has been ranked among the top physicians in the nation based on patient reviews. TEMECULA and CORONA, Calif., July 10, 2012 /PRNewswire-USNewswire/ -- A select few physicians were honored with the prestigious 2011 Patients' Choice Award, and this year they include Dr. Venugopal Depala. (Photo: http://photos.prnewswire.com/prnh/20120710/DC37770) Only doctors who have received top scores by their patients and pass other quality measures...

Sifting Through Starlight To Find New Planets
2012-07-06 05:42:46

Lee Rannals for redOrbit.com - Your Universe Online The first images from a new project are demonstrating a new technique that creates precise "dark holes" around stars of interest. Dark holes are extremely difficult to see directly in an image because the light that stars emit is tens of millions to billions of times brighter than the light given off by planets. However, astronomers working on Project 1640 presented findings of dark holes at the International Society for Optics and...

NASA Launching New Sun Observing Spacecraft Thursday
2012-07-04 13:04:55

Lee Rannals for redOrbit.com - Your Universe Online While the nation shoots off plenty of fireworks for the Fourth of July, NASA will be sending off its own rocket the next day. The space agency will be launching its Solar Ultraviolet Magnetograph Investigation (SUMI) on Thursday to study the magnetic fields on the sun. SUMI will set out to study the constantly changing magnetic fields in an area of the sun's low atmosphere called the chromosphere. These magnetic fields lie at the...

Doppler Techniques Could Help Predict Solar Storms
2012-07-04 04:12:19

Lee Rannals for redOrbit.com - Your Universe Online Scientists are using Doppler techniques that may be able to take predicting space weather to a new level and understanding. An international team of researchers have combined Doppler techniques with images and data from a space-based telescope to observe loops of 1,800,000-degree Fahrenheit plasma flowing up from the sun's surface at more than 12 miles per second. These loops arch over the sun, and may be the first signs of trouble...


Latest Corona Reference Libraries

6_9f9676753bcc717a861f93bfceb7d2f82
2004-10-19 04:45:41

Corona -- The corona is the luminous "atmosphere" of the Sun extending millions of kilometers into space, most easily seen during a total solar eclipse. An interesting feature of the corona is the fact that it is much hotter than the visible "surface" of the Sun; the photosphere is approximately 6000°C compared to the corona at over one million °C. The corona is much less dense than the photosphere, however, and so produces less light. The exact mechanism by which the corona is...

4_5d937e9435f471d0f5354cef6f8fdcda2
2004-10-19 04:45:41

Solar Prominence -- Solar prominences are large arch-shaped structures observable in the solar corona. These often have a twist and occasionally become unstable, ejecting plasma and magnetic flux out from the sun. The physics of solar prominence instability is believed to be governed by magnetic forces and magnetic helicity issues. It is thought that instability occurs when a magnetic flux tube becomes excessively twisted. ----- Click here to learn more on this topic from eLibrary:

4_c3e26bdabe1325e08e2593b25329604b2
2004-10-19 04:45:41

Solar Flare -- A solar flare is a violent eruption that explodes from a star's photosphere with energies equivalent to tens of millions of hydrogen bombs. Solar flares from the Sun send out a streams of highly energetic solar wind that can present a radiation hazard to spacecraft outside of planetary magnetospheres and can disrupt radio signals on Earth. Solar flares were first observed on the Sun in 1859 by English astronomer Richard Carrington. They have also been observed to...

4_a9775d2328a386c7976f6f9895c6d2ac2
2004-10-19 04:45:40

The Sun -- intensely hot, self-luminous body of gases at the center of the solar system. Its gravitational attraction maintains the planets, comets, and other bodies of the solar system in their orbits. The sun is actually a star of about medium size; it appears larger than the other stars because of its relative nearness to the earth. The earth's distance from the sun varies from 91,377,000 mi (147,053,000 km) at perihelion to 94,537,000 mi (152,138,000 km) at aphelion (see apsis). The...

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