Quantcast

Latest Solar flare Stories

Solar Dynamics Observatory Observes New Solar Flare Characteristics
2011-09-08 06:06:56

  NASA's Solar Dynamics Observatory, or SDO, has provided scientists new information about solar flares indicating an increase in strength and longevity that is more than previously thought. Solar flares are intense bursts of radiation from the release of magnetic energy associated with sunspots. They are the solar system's largest explosive events and are seen as bright areas on the sun. Their energy can reach Earth's atmosphere and affect operations of Earth-orbiting...

2011-09-02 13:40:22

NASA will host a media teleconference at 1 p.m. EDT on Wednesday, Sept. 7, to discuss new observations about solar flares that can impact communication and navigation systems. NASA's Solar Dynamics Observatory, or SDO, is providing new data and images for scientists to better understand the sun's dynamic processes, which can affect Earth. The spacecraft launched in February 2010. Teleconference participants are: -- Madhulika Guhathakurta, SDO program scientist, NASA Headquarters...

spacepress-082611-002
2011-08-26 07:12:15

  Imagine forecasting a hurricane in Miami weeks before the storm was even a swirl of clouds off the coast of Africa–or predicting a tornado in Kansas from the flutter of a butterfly's wing(1) in Texas. These are the kind of forecasts meteorologists can only dream about. Could the dream come true? A new study by Stanford researchers suggests that such forecasts may one day be possible–not on Earth, but on the sun. "We have learned to detect sunspots before they are...

a55ff5ec73d73a98639c7ec21b4a728e
2011-08-19 07:55:00

Researchers at Reading University said that solar storms are likely to become more disruptive to planes and spacecraft within decades. The team predicts that once the Sun shifts towards an era of lower solar activity, more hazardous radiation will reach Earth. The researchers said in Geophysical Research Letters that the Sun is currently at a grand solar maximum, which is a phase that began in the 1920s. Mike Lockwood, professor of space environment physics at Reading, said in a statement:...

2011-08-18 13:00:00

WASHINGTON, Aug. 18, 2011 /PRNewswire-USNewswire/ -- NASA spacecraft observations and new data processing techniques are giving scientists better insight into the evolution and development of solar storms that can damage satellites, disrupt communications and cause power grid failures on Earth. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The solar storms, called Coronal Mass Ejections (CMEs), are being observed from NASA's twin Solar Terrestrial Relations Observatory,...

e1592824f38791fa8bf01154bfc4d9ef
2011-08-09 14:55:00

NASA said on Tuesday that the sun unleashed the biggest solar flare in four years. The NOAA GOES satellite measured an X6.9 flare on August 9, 2011 at 3:48 a.m. EDT The bursts of radiation cannot pass through Earth's atmosphere to harm humans on the ground, but it can disrupt GPS and communications signal, according to NASA. "It was a big flare," Joe Kunches, a space scientist with the National Oceanic and Atmospheric Administration (NOAA)'s Space Weather Prediction Center told CBS News....

a9eb30b44eabda20ca56768c91a8676e
2011-08-07 05:30:00

American government scientists are warning users of satellite, telecommunication, and electrical equipment to be prepared for potential disruptions due to the recent occurrence of solar flares in the sun, Reuters reported on Saturday. Earlier last week, three coronal mass ejections (CMEs) were released by the sun following solar flares -- the first on August 2 and two others the following day. The initial CME arrived at Earth on August 4, around 5pm EDT, while the remaining two combined and...

9967cef266d29cdc004dcdbf6618c555
2011-07-12 10:30:00

By Dr. Tony Phillips - Science@NASA On June 7, 2011, Earth-orbiting satellites detected a flash of X-rays coming from the western edge of the solar disk. Registering only "M" (for medium) on the Richter scale of solar flares, the blast at first appeared to be a run-of-the-mill eruption--that is, until researchers looked at the movies. "We'd never seen anything like it," says Alex Young, a solar physicist at the Goddard Space Flight Center. "Half of the sun appeared to be blowing itself to...


Latest Solar flare Reference Libraries

6_b41df2b5116346e900bfb8a97da136be2
2004-10-19 04:45:42

Photosphere -- The photosphere of an astronomical object is the region at which the optical depth becomes one. In other words, the photosphere is the place where an object stops being transparent. It is typically used to describe the Sun or another star. Because stars are large balls of gas, they have no solid surface. However, there is a depth at which the gas stops being transparent to photons, and this depth provides a visual surface to the star. The Sun's photosphere has a...

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...

6_4d16b7c37ad5d88de63c76846431dbc72
2004-10-19 04:45:41

Chromosphere -- The chromosphere (literally, "color sphere") is a thin layer of the Sun's atmosphere just above the photosphere, roughly 10,000 kilometers deep. The chromosphere is more visually transparent than the photosphere. The most common solar feature within the chromosphere are spicules, long thin fingers of luminous gas which appear like the blades of a huge field of fiery grass growing upwards from the photosphere below. Spicules rise to the top of the chromosphere and then sink...

4_d3a853c28ff70a676427cf8e42fced4f2
2004-10-19 04:45:41

Solar Wind -- Solar wind, a stream of particles (mostly high-energy protons ~ 500 Kev) that is continually ejected from the surface of the Sun. The composition of this plasma is identical to the Sun's corona, 73% hydrogen and 25% helium with the remainder as trace impurities, and is ionized. Near Earth, the velocity of the solar wind varies from 200km/s-889km/s. The average is 450 km/s. Approximately 3000 tons of material is lost from the Sun every hour as solar wind. Since solar...

4_641fa07d2f22a90aec48fb5581337d772
2004-10-19 04:45:41

Solar Maximum -- The Sun, a roiling ball of plasma, occupies its place in space approximately 93 million miles from Earth. Though it seems simple to inhabitants of this planet -- the Sun shines, giving light and heat -- the processes occurring in the Sun are so complex that many scientists devote their careers to just one aspect of solar activity. Changes in the activity of the Sun particularly engage solar scientists. Whether fluctuations in the solar magnetic field, expulsions of...

More Articles (6 articles) »
Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
Related