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Latest Corona Stories

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

ESA 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. During a total solar eclipse the Moon moves in front of the Sun as seen from Earth, their separation and alignment such that the Moon appears large enough to temporarily block out the Sun´s light. An eerie light is cast over ground observers as...

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

Lee Rannals for redOrbit.com — Your Universe Online Australians will have the privilege of witnessing a total solar eclipse about an hour after sunrise on November 14. The eclipse will be visible from the northeastern Australia coast, along the Great Barrier Reef, during which astronomers will be working on scientific observations. Jay Pasachoff, Field Memorial Professor of Astronomy at Williams College, will be viewing his 56th solar eclipse, along with colleagues and...

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

redOrbit Staff & Wire Reports - Your Universe Online 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. The twin orbiting probes were launched on that date in 2006, and ultimately entered into similar but separate orbits around the sun. STEREO-A's orbit is slightly smaller and faster, while STEREO-B's is larger and slower, they said, and those subtle...

NASA Observatory Captures Another X-Class Solar Flare
2012-10-23 15:32:34

[WATCH VIDEO: Active Region On The Sun Emits Another Flare] Lee Rannals for redOrbit.com — Your Universe Online NASA said its Solar Dynamics Observatory (SDO) captured the sun erupting with an X1.8 class solar flare on Monday. The solar flare came from an active region on the left side of the sun known as AR 1598, which has been the source of weaker flares. The "X-class" solar flares are the most intense flares, with the number near the X representing its intensity. An X2...

Solar Plasma Wave Unleashed
2012-10-21 08:45:32

April Flowers for redOrbit.com - Your Universe Online NASA´s Solar Dynamics Observatory captured a spectacular solar eruption on Friday. A giant super-hot wave of solar plasma larger than the planet Earth erupted from the Sun at 4:15 a.m. EDT and was caught in amazing high-definition detail by the NASA spacecraft. "Once it started breaking away, the process only took 10 hours before it was out of sight," NASA media specialist Steele Hill explained in a photo description. "The...

Coronal Mass Ejection Captured By SOHO
2012-09-29 08:20:34

April Flowers for redOrbit.com - Your Universe Online At 10:23 pm EDT on September 27, 2012, NASA's Solar and Heliospheric Observatory (SOHO) captured an image of a particularly wide coronal mass ejection (CME) that erupted from the Sun. SOHO is an international collaborative effort between NASA and the European Space Agency (ESA) to study the Sun from its deep core to the outer corona. The SOHO spacecraft also studies the solar winds generated by solar events. The sun erupted in a...

Coronal Mass Ejections Linked To Sun's Interior
2012-09-25 04:30:27

April Flowers for redOrbit.com - Your Universe Online After forty long years of debates and theories and counter-theories, the community of solar physics scientists has still failed to come to a consensus about what causes the sun's powerful coronal mass ejections (CMEs). CMEs have profound "space weather" effects on land based power grids and satellites in near-Earth geospace. An international team of scientists explains the mysterious physical mechanisms behind the origin of CMEs in a...

Astronomers Look Long At Coronal Mass Ejections
2012-09-20 18:54:36

Lee Rannals for redOrbit.com — Your Universe Online Astronomers reported in The Astrophysical Journal they have a better understanding of the temperatures of the coronal cavities in Coronal Mass Ejections (CMEs). Terry Kucera, a solar scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland, along with colleagues, set out to understand the structure of CMEs, even before they erupt. CMEs are eruptions that take place on the sun that can travel toward Earth and...

2012-09-19 23:00:38

US-based LED Sign manufacturer, Vantage LED, dedicates itself as a Trusted Manufacturer, Resource, and Power Partner in the LED Sign industry. They welcome David Bittenbender to the team as new Field Sales Manager in Southeastern US. Corona, CA (PRWEB) September 19, 2012 US-based LED Sign manufacturer, Vantage LED, announces new sales team member, David Bittenbender. David joined the team on July 16, 2012, and will be responsible for powering up dealer relationships and promoting the...


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
monteith
  • A large punch-bowl of the eighteenth century, usually of silver and with a movable rim, and decorated with flutings and a scalloped edge. It was also used for cooling and carrying wine-glasses.
  • A kind of cotton handkerchief having white spots on a colored ground, the spots being produced by a chemical which discharges the color.
This word is possibly named after Monteith (Monteigh), 'an eccentric 17th-century Scotsman who wore a cloak scalloped at the hem.'
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