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Latest Corona Stories

Solar Wind Storms Earth, Enhances Northern Lights
2012-12-17 15:22:33

NASA said on Monday that our planet has entered a stream of high-speed solar wind that "escaped" through a coronal hole on the Sun.

New Results Pave Way For Future Of X-ray Astrophysics Research
2012-12-13 17:36:02

Scientists are paving the way for future X-ray astrophysics research by explaining why observations from orbiting X-ray telescopes do not match theoretical predictions.

Six Minutes In The Life Of The Sun For NASA's EUNIS Mission
2012-12-12 09:12:37

In December, a NASA mission to study the sun will make its third launch into space for a six-minute flight to gather information about the way material roils through the sun's atmosphere, sometimes causing eruptions and ejections that travel as far as Earth.

Approaching 17 Years Of Observations For ESA/NASA’s SOHO Spacecraft
2012-12-05 15:33:27

When the Solar and Heliospheric Observatory (SOHO) launched on Dec. 2, 1995, it provided some of the first high-resolution observations of the sun unobscured by Earth's own atmosphere.

Solar Flare Heads Towards Earth
2012-11-13 15:54:05

NASA said that the sun emitted a mid-level solar flare on Tuesday that has the potential of causing some radio blackouts. The solar flare reached a classification of M6, which falls into the weakest flares that are still able to cause some space weather effects near Earth.

Are You Ready For A Total Solar Eclipse?
2012-11-13 10:24:35

Tomorrow’s total solar eclipse will only be visible in its entirety to ground-based observers watching from northern Australia, but ESA’s Sun-watching Proba-2 satellite will have a ringside seat from its orbit around Earth.

Upcoming Total SOlar Eclipse To Be Documented
2012-11-05 13:25:40

Australians will have the privilege of witnessing a total solar eclipse about an hour after sunrise on November 14.

Solar Spacecraft Celebrate Six Years In Service
2012-10-29 03:50:29

On Thursday, October 25, NASA's twin Solar Terrestrial Relations Observatory (STEREO) program celebrated its sixth anniversary orbiting the sun, the US space agency announced on Friday.


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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Word of the Day
bretelles
  • In dressmaking, straps running from the belt in front over the shoulders to the belt in the back, with more or less elaboration of trimming and outline. They usually broaden at the shoulder and narrow toward the waist.
The word 'bretelles' comes from a French word meaning 'braces'.