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Latest Corona Stories

Solar Tsunami Measures Sun Magnetic Field
2013-07-11 12:19:51

Lee Rannals for redOrbit.com - Your Universe Online A solar tsunami has provided scientists with the first accurate estimates of the Sun's magnetic field. Researchers wrote in the journal Solar Physics that solar tsunamis are produced by enormous explosions in the Sun's atmosphere known as coronal mass ejections (CMEs). As these events move through space, the tsunami travels across the Sun at speeds of up to 621 miles per second. Solar tsunamis have a higher speed in regions where the...

Magnetic Waves Responsible For Keeping Sun's Corona Heated
2013-07-09 15:10:08

Lee Rannals for redOrbit.com - Your Universe Online Astronomers at the 44th meeting of the Solar Physics Division (SPD) of the American Astronomical Society are shedding light on the Sun's coronal heating mystery. The team found evidence magnetic waves in a polar coronal hole contain enough energy to heat the corona and deposit most of their energy at sufficiently low heights for the heat to spread throughout the corona. Their observations help answer a 60-year-old solar physics mystery...

Space Weather Prediction Systems Need To Be More Reliable
2013-07-06 04:29:18

John P. Millis, Ph.D. for redOrbit.com – Your Universe Online The residents of Earth have a vested interest in being able to accurately predict solar activity, particularly events such as solar flares and coronal mass ejections (CMEs). These eruptions spew energetic charged particles into the solar system at fantastic rates, which have the potential to damage orbiting satellites and even ground based power grids. Our first line of defense against solar activity is knowing when to...

Fascinating Features On Sun Captured By Solar Dynamics Observatory
2013-07-05 13:32:39

Lee Rannals for redOrbit.com - Your Universe Online Scientists studying the solar atmosphere have spotted some fascinating moving features in the Sun's sky. A team using the Atmospheric Imaging Assembly (AIA) telescope on board the Solar Dynamics Observatory (SDO) satellite has found unusual solar prominences, including: a giant disc that rotates for several hours; feathery streams as long as fifty Earths; a super-heated jet striking the top of a prominence; and twisted ribbons flowing...

2013-07-03 23:18:22

Beverly Hills Hair Restoration is now offering hair transplant consultations to those in Corona and surrounding cities in Riverside County. Corona, CA (PRWEB) July 03, 2013 Beverly Hills Hair Restoration, a world class hair restoration center, is now serving a new location in Corona, CA for hair transplant consultations. The private hair transplant practice will now be open for patients seeking world class results in Hair Restoration in Corona, Riverside, Santa Ana, Anaheim, San Bernadino...

2013-07-02 23:23:58

Vantage LED is empowering their dealer partners’ identity by helping to tell their stories about their companies, their clients/projects and their partnership with Vantage LED by offering complimentary press releases. Corona, CA (PRWEB) July 02, 2013 Vantage LED believes in supporting and nourishing partnerships as well as being an active resource for their dealer partners. In the past year, they launched a powerful co-branding campaign focusing on empowering dealers with co-branded...

Scientists Study Coronal Loops To Gain Insight Into Solar Dynamics
2013-07-02 18:21:44

John P. Mills, Ph.D. for redOrbit.com -- Your Universe Online Solar flares and the even more violent Coronal Mass Ejections (CMEs) are spectacular events, driving enormous amounts of energy and streams of charged particles into space. While researchers have had the opportunity to study these events for decades, we are still learning about what initiates these explosions. Previous studies have revealed that twisted magnetic field lines within the solar structure will pierce the surface...

CME Headed Toward Mercury And Venus
2013-07-02 16:01:43

NASA On July 1, 2013, at 6:09 p.m. EDT, the sun erupted with a coronal mass ejection, or CME, a solar phenomenon that can send billions of tons of solar particles into space that can affect electronic systems in satellites. Experimental NASA research models based on NASA's Solar Terrestrial Relations Observatory show that the CME was not Earth-directed and it left the sun at around 570 miles per second. The CME may, however, pass by NASA's Messenger, Spitzer and STEREO-B satellites, and...

New Program Aims To Understand Effects Of Space Weather
2013-07-01 19:10:36

Lee Rannals for redOrbit.com -- Your Universe Online Scientists are working on a program to better understand how national grids could be affected by space weather. British Geological Survey (BGS) researchers are conducting continuous measurements of the background electric field in the UK to better understand how the UK National Grid can be interrupted by the Sun. Space weather can take place when the ejection of material from the Sun, or coronal mass ejection (CME), shoots towards...


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
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.