Showing posts with label Solar Dynamics Observatory. Show all posts
Showing posts with label Solar Dynamics Observatory. Show all posts

Wednesday, November 04, 2015

There's a Hole in The Sun – Geomagnetic Storms Imminent!

There's a Hole in The Sun – Geomagnetic Storms Imminent

By Brian K Sullivan
www.bloomberg.com
11-3-15

     Get ready for a light show.

The sun’s about to spit charged particles our way. And that solar wind of protons and electrons will interact with the Earth’s magnetic field to light up the skies with a dazzling display of color through Wednesday.

The solar wind coming out of a hole on the sun will almost certainly spark an aurora that may be seen by millions of people. The hole contains less material than other parts of the sun, allowing the wind to flow outward much faster than normal -- “more than two and a half times” faster, according to Robert Rutledge, a forecaster at the U.S. Space Weather Prediction Center in Boulder, Colorado.

People across large parts of Asia, Europe and North America should be able to catch the aurora. Those as far south as Illinois in the U.S. may count themselves lucky. [...]

Thursday, October 15, 2015

Gigantic Hole In The Sun's Atmosphere Has Opened

 
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Gigantic Hole In The Sun's Atmosphere Has Opened

By spaceweather.com
10-14-15

     A gigantic hole in the sun's atmosphere has opened up and a broad stream of solar wind is flowing out of it. This is called a "coronal hole." It is the deep blue-colored region in this extreme UV image from NASA's Solar Dynamics Observatory (see above).

Coronal holes are places in the sun's atmosphere where the magnetic field unfurls and allows solar wind to escape. In the image above, the sun's magnetic field is traced by white curving lines. Outside the coronal hole, those magnetic fields curve back on themselves, trapping solar wind inside their loops. Inside the coronal hole, no such trapping occurs. Solar wind plasma is free to fly away as indicated by the white arrows.

For much of the next week, Earth's environment in space will be dominated by winds flowing from this broad hole. This should activate some beautiful Arctic auroras. [...]

Saturday, December 27, 2014

Massive Solar Flare Causes Radio Blackouts | VIDEO

Massive Solar Flare (12-19-14)
Credit: NASA's Goddard Space Flight Center



By Frank Warren
The UFO Chronicles
12-26-14

     The sun emitted a massive solar flare late Friday (Dec. 19); it registered as an X1.8-class event and was captured on camera by NASA's powerful Solar Dynamics Observatory. As has happened in the past with these most powerful events (X1's), radio blackouts were experienced for parts of the earth.

Thursday, September 04, 2014

Huge Coronal Mass Ejection (CME) Headed Towards Earth? | VIDEO

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Huge Coronal Mass Ejection (CME) Headed Towrds Earth

Intense Solar Eruption Captured by NASA Spacecraft (Video)


By Megan Gannon
www.space.com
8-3-14

      A huge tendril of super-hot plasma that had been creeping across the face of the sun erupted Tuesday (Sept. 2) in a striking solar storm that may send a wave of charged particles in Earth's direction.

Video of the solar eruption captured by NASA's sun-watching Solar Dynamics Observatory shows a cloud of solar plasma being hurled from the sun's surface during the rippling blast.

Debris from the solar explosion could be traveling in the direction of Earth, according to Spaceweather.com, which tracks stargazing and space weather events. Further observations should confirm whether the eruption was actually an Earth-directed coronal mass ejection, or CME. . . .

Thursday, June 06, 2013

Coronal Hole In Sun May Cause Solar Winds & Auroras, NASA Says | VIDEO


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Coronal Hole

By The Huffington Post
6-6-13

     We're not sure whether to be amazed or alarmed.

A "massive" coronal hole that rotated toward Earth from May 28-31 was one of the largest such holes NASA says it has observed all year.

The amazing part is that NASA's Solar Dynamics Observatory was able to capture some spectacular ultraviolet footage of the hole in the sun's corona. (Watch in the video below.)

The potentially alarming part?

Coronal holes (dark, cold areas in the sun's outermost atmospheric layer) are the sources of solar winds -- streams of charged particles that travel at more than 1 million mph and can cause auroras and geomagnetic storms (worldwide disturbances of the Earth's magnetic field) when they reach our planet. . . .

Thursday, February 21, 2013

"Colossal Sunspot On ... Sun is Large Enough to Swallow Six Earths, Says NASA"

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Colossal Sunspot On Sun is Large Enough to Swallow Six Earths, Says NASA

Huge Sunspot May Trigger Solar Activity & Flares, NASA Says

By Tariq Malik
The Huffington Post
2-20-13
      A colossal sunspot on the surface of the sun is large enough to swallow six Earths whole, and could trigger solar flares this week, NASA scientists say.

The giant sunspot was captured on camera by NASA's Solar Dynamics Observatory as it swelled to enormous proportions over the 48 hours spanning Tuesday and Wednesday (Feb. 19 and 20). SDO is one of several spacecraft that constantly monitor the sun's space weather environment.

"It has grown to over six Earth diameters across, but its full extent is hard to judge since the spot lies on a sphere, not a flat disk," wrote NASA spokeswoman Karen Fox, of the agency's Goddard Space Flight Center in Greenbelt, Md., in an image description.

The sunspot region is actually a collection of dark blemishes on the surface of the sun that evolved rapidly over the last two days. Sunspots form from shifting magnetic fields at the sun's surface, and are actually cooler than their surrounding solar material. . . .