A Powerful Solar Flare

It was one of the most powerful solar flares in recorded history. Occurring in 2003 and seen across the electromagnetic spectrum, the Sun briefly became over 100 times brighter in X-rays than normal. The day after this tremendous X 17 solar flare — and subsequent Coronal Mass Ejection (CME) — energetic particles emitted from the explosions struck the Earth, creating auroras and affecting satellites. The spacecraft that took these frames — SOHO — was put in a turtle-like safe mode to avoid further damage from this and subsequent solar particle storms. The featured time-lapse movie condenses into 10 seconds events that occurred over 4 hours. The CME, visible around the central sun-shade, appears about three-quarters of the way through the video, while frames toward the very end are progressively noisier as protons from the explosions strike SOHO’s LASCO detector. One this day in 1859, the effects of an even more powerful solar storm caused telegraphs on Earth to spark in what is known as the Carrington Event. Powerful solar storms such as these may create beautiful aurora-filled skies, but they also pose a real danger as they can damage satellites and even power grids across the Earth. [via NASA] https://ift.tt/2NEaX8a
Anuncios

On August 23, 2018 the identification and distribution of aerosols in the Earth’s atmosphere is shown in this dramatic, planet-wide visualization. Produced in real time, the Goddard Earth Observing System Forward Processing (GEOS FP) model relies on a combination of Earth-observing satellite and ground-based data to calculate the presence of types of aerosols, tiny solid particles and liquid droplets, as they circulate above the entire planet. This August 23rd model shows black carbon particles in red from combustion processes, like smoke from the fires in the United States and Canada, spreading across large stretches of North America and Africa. Sea salt aerosols are in blue, swirling above threatening typhoons near South Korea and Japan, and the hurricane looming near Hawaii. Dust shown in purple hues is blowing over African and Asian deserts. The location of cities and towns can be found from the concentrations of lights based on satellite image data of the Earth at night. [via NASA] https://ift.tt/2orIqHS

Close Mars

Still bright in evening skies, Mars was just past opposition and closest to Earth on July 31, a mere 57.6 million kilometers away. Captured only a week later, this remarkable image shows the Red Planet’s disk near its maximum size in earthbound telescopes, but still less than 1/74th the apparent diameter of a Full Moon. Broad regional surface shadings are starting to reappear in the tantalizing view as the latest planet-wide dust storm subsides. With the bright south polar cap at the bottom, the Valles Marineris extends along the center of the disk. Just below it lies the roughly circular Solis Lacus region sometimes known as the Eye of Mars. In a line, three prominent dark spots left of center are the volcanic Tharsis Montes. [via NASA] https://ift.tt/2oqFPhw

The NGC 6914 Complex

A study in contrasts, this colorful skyscape features stars, dust, and glowing gas in the vicinity of NGC 6914. The complex of reflection nebulae lies some 6,000 light-years away, toward the high-flying northern constellation Cygnus and the plane of our Milky Way Galaxy. Obscuring interstellar dust clouds appear in silhouette while reddish hydrogen emission nebulae, along with the dusty blue reflection nebulae, fill the cosmic canvas. Ultraviolet radiation from the massive, hot, young stars of the extensive Cygnus OB2 association ionize the region’s atomic hydrogen gas, producing the characteristic red glow as protons and electrons recombine. Embedded Cygnus OB2 stars also provide the blue starlight strongly reflected by the dust clouds. The nearly 1 degree wide telescopic field of view spans about 100 light-years at the estimated distance of NGC 6914. [via NASA] https://ift.tt/2C13bDU

Tuiteando al vuelo, August 30, 2018 at 03:24AM

Dedicado a @roberbodegas y a todos los que, como él, nos ayudan a mirar el lado divertido de la vida y nos regalan ratos de risas. https://t.co/abfluCLA9r

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YouTubeando: Flori – “Purple rain” | La final de ‘La Voz Kids’ el lunes a las 22:00h en Telecinco

Flori – “Purple rain” | La final de ‘La Voz Kids’ el lunes a las 22:00h en Telecinco
via YouTube https://youtu.be/bDO02mvpbGI

¡No te pierdas la final de ‘La Voz Kids’ el lunes a las 22:00!

Flori se subía al escenario de ‘La voz Kids 4’ para interpretar, en la semifinal, una versión del éxito de Prince, ‘Purple rain’. Los coaches no salían de su asombro tras la actuación y Orozco acababa por los suelos. “Podría decir que es una de las mejores actuaciones que he visto en mi vida… pero no lo haré porque no es el momento de decírtelo a ti, es el momento de decírselo a tus padres. Esto que acaba de pasar es pura magia”, aseguraba el coach.

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Sea and Sky Glows over the Oregon Coast

Every step caused the sand to light up blue. That glow was bioluminescence — a blue radiance that also lights the surf in this surreal scene captured last month at Meyer’s Creek Beach in Oregon, USA. Volcanic stacks dot the foreground sea, while a thin fog layer scatters light on the horizon. The rays of light spreading from the left horizon were created by car headlights on the Oregon Coast Highway (US 101), while the orange light on the right horizon emanates from a fishing boat. Visible far in the distance is the band of our Milky Way Galaxy, appearing to rise from a dark rocky outcrop. Sixteen images were added together to bring up the background Milky Way and to reduce noise. [via NASA] https://ift.tt/2PadW8M