Giant Filament Seen on the Sun
A dark, snaking line across the lower half of the sun in this Feb. 10, 2015 image from NASA's Solar Dynamics Observatory (SDO) shows a filament of solar material hovering above the sun's surface. SDO shows colder material as dark and hotter material as light, so the line is, in fact, an enormous swatch of colder material hovering in the sun's atmosphere, the corona. Stretched out, that line – or solar filament as scientists call it – would be more than 533,000 miles long. That is longer than 67 Earths lined up in a row. Filaments can float sedately for days before disappearing. Sometimes they also erupt out into space, releasing solar material in a shower that either rains back down or escapes out into space, becoming a moving cloud known as a coronal mass ejection, or CME. SDO captured images of the filament in numerous wavelengths, each of which helps highlight material of different temperatures on the sun. By looking at such features in different wavelengths and temperatures, scientists learn more about what causes these structures, as well as what catalyzes their occasional eruptions. Launched on Feb. 11, 2010 aboard a ULA Atlas V rocket from Cape Canaveral Air Force Station, Fla., NASA's Solar Dynamics Observatory is designed to study the causes of solar variability and its impacts on Earth. The spacecraft's long-term measurements give solar scientists in-depth information to help characterize the interior of the sun, the sun's magnetic field, the hot plasma of the solar corona, and the density of radiation that creates the ionosphere of the planets. The information is used to create better forecasts of space weather needed to protect aircraft, satellites and astronauts living and working in space. Image Credit: NASA/SDO
el dispensador dice:
ya vengo presintiendo,
ondas de calor entre los vientos,
raras alteraciones,
algunos desconciertos,
andan inquietas las almas,
entre frustraciones y desaciertos,
abriendo portales oscuros,
perdiéndose en soledades sin tiempo...
ya te vengo venir desde lejos,
con radiaciones entrecejos,
enojado por andar trastocado el reino,
entre desfachatados y otros faltos de consejos,
y todo se arremolina,
como confusión de alientos,
algunos huyen de sus ausencias,
y otros se pierden entre laberintos y desfiladeros...
tus señales vengo viendo,
que se van repitiendo,
anunciando las molestias,
entre los creadores del universo...
¿qué se puede hacer ante tanto verso?,
prefiero esperar lo incierto,
sentado bajo un árbol,
mirando cómo el horizonte se esfuma,
ante nostalgias y brumas...
FEBRERO 12, 2014.-
Fall of Assad regime continues collapse of the Iranian dream Analysis: As
situation unfolds in Syria, Israel must significantly strengthen its
defenses on the Golan Heights border and focus on the disturbing scenario
of terrorists taking over arsenal of weapons of mass destruction Yossi
Yehoshua|Yesterday | 07:36
-
https://www.ynetnews.com/article/bknd1kme1l
Hace 20 horas
No hay comentarios:
Publicar un comentario