viernes, 22 de abril de 2016

A PURO SOL ▲ Sunspot Region Produces Mid-Level Solar Flare | NASA

Sunspot Region Produces Mid-Level Solar Flare | NASA

NASA's SDO Captures Images of a Mid-Level Solar Flare

The sun emitted a mid-level solar flare, peaking at 8:29 pm EDT on April 17, 2016. NASA’s Solar Dynamics Observatory, which watches the sun constantly, captured an image of the event. Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel.
SDO view of a solar flare, April 17, 2016
NASA's Solar Dynamics Observatory captured this imagery of a solar flare – as seen in the bright flash – around 8:30 p.m. EDT on April 17, 2016. A loop of solar material can also be seen rising up off the right limb of the sun.
Credits: NASA/SDO/Goddard
SDO image of sun showing sunspot
A black spot on the sun is visible in the upper right of this image captured by NASA's Solar Dynamics Observatory. Such spots are evidence that this is an area of complex magnetic activity on the sun, which can sometimes lead to solar eruptions sending light and radiation out into space. This region produced a solar flare at 8:29 p.m. EDT on April 17, 2016.
Credits: NASA/SDO/Goddard
NOAA's Space Weather Prediction Center states that "moderate radio blackouts were observed" during the peak of the flare. Such radio blackouts are only ongoing during the course of a flare, and so they have since subsided. NOAA's Space Weather Prediction Center is the U.S. government's official source for space weather forecasts, watches, warnings and alerts.
This flare is classified as an M6.7 class flare. M-class flares are a tenth the size of the most intense flares, the X-class flares. The number provides more information about its strength. An M2 is twice as intense as an M1, an M3 is three times as intense, etc.
This flare came from an area of complex magnetic activity on the sun – known as an active region, and in this case labeled Active Region 2529 – which has sported a large dark spot, called a sunspot, over the past several days. This sunspot has changed shape and size as it slowly made its way across the sun’s face over the past week and half. For much of that time, it was big enough to be visible from the ground without magnification and is currently large enough that almost five Earths could fit inside. This sunspot will rotate out of our view over the right side of the sun by April 20, 2016.  Scientists study such sunspots in order to better understand what causes them to sometimes erupt with solar flares.
What is a solar flare?
For answers to this and other space weather questions, please visit the Space weather Frequently Asked Questions page.
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Last Updated: April 18, 2016
Editor: Rob Garner

el dispensador dice:
y no sabes de cielos,
tampoco de estrellas,
las galaxias están lejos,
no te importa lo que hay en ellas,
te han enseñado,
que sólo vale lo cerca,
que lo que no se toca,
no entra en la alberca,
y simplemente andas,
con la vida a cuestas,
te crees dueño del tiempo,
y de lo que ofrece la huerta,
pero todo sucede,
en un orden que no tiene a tu mano cerca,
y no participas,
en la oscilación de un universo que se aleja,
mientras tu pasas y sueñas...
no te la creas...
todo depende del orden de la naturaleza,
tu eres distancia,
y gastas a cuenta de tu propia ausencia,
ocupas un espacio,
mientras un hueco te alberga,
y de pronto el vacío,
y el recuerdo se pierde,
mientras el olvido se añeja...
antes que nada sé humilde,
mientras la gracia te envuelva...
un día concluye,
y la vida regresa...
ya no tienes palabra,
eres tal como te muestras,
careces de cuerpo,
y vuelas las cuestas...
cuida tus hechos,
porque los lobos acechan. ABRIL 22, 2016.-

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