Articles tagged "sunspot" - page 2

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Incoming Coronal Mass Ejection (CME)

During the early hours of July 9th, a Coronal Mass Ejection (CME) billowed away from new sunspot 1247. A preliminary analysis of data from NASA's twin STEREO-A and -B spacecraft suggests that the flank of the CME could hit Earth's magnetic field sometime on July

July 09, 2011

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Solar wind hit Earth's magnetic field

A sharp gust of today, June 17th, at approximately 0230 UT. This probably signaled the arrival of a CME, en route from the sun since June 14th.

June 17, 2011

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Sunspot 1236 harbors energy for M-class solar flares

The magnetic field of sunspot 1236 harbors energy for M-class solar flares. NOAA forecasters estimate a 25% chance of such an eruption during the next 24 hrs.

June 16, 2011

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New insights on how solar minimums affect Earth

Since 1611, humans have recorded the comings and goings of black spots on the sun. The number of these sunspots waxes and wanes over approximately an 11-year cycle - more sunspots generally mean more activity and eruptions on the sun and vice versa. The number of

June 15, 2011

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Geomagnetic storm in progress, gigantic solar prominences

Amateur astronomers around the world are reporting strong activity on the limb of the sun. The prominences on June 4th were gigantic. Prominences are clouds of hot plasma

June 05, 2011

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Comet hit the Sun?

A comet just discovered by amateur astronomer Sergey Shurpakov is diving past the sun today, and it will probably not survive. Click here to view a movie of the death plunge recorded by the Solar and Heliospheric Observatory--and check back for updates in the hours

May 11, 2011

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Spectacular CME, active region approaching Earth

A sunspot located just behind the sun's eastern limb erupted during the waning hours of May 9th, hurling a spectacular coronal mass ejection into space: movie. NASA's Solar Dynamics Observatory photographed hot magnetic loops towering over the edge of the sun in the

May 11, 2011

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Fast growing sunspot 1199

New sunspot 1199 is growing rapidly in the sun's northern hemisphere, ballooning in area by more than a factor of five during the last 24 hours. If the expansion continues apace, this active region could soon pose a threat for flares. Stay tuned. (SpaceWeather)

April 27, 2011

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Big sunspot 1195 harbors energy for M-class solar flares

This detailed image of sunspot 1195 looks like it was taken by one of NASA's most advanced space telescopes. In fact, it comes from someone's backyard in the Netherlands. Scroll down for the full story, and carefully examine the starscape as you

April 24, 2011

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Coming of big troubled sunspot region

A big sunspot is emerging over the sun's southeastern limb, and it is crackling with activity. NASA's Solar Dynamics Observatory recorded a surge of extreme ultraviolet radiation from the sunspot's magnetic canopy on March 21st:This appears to be the return of old

March 22, 2011

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Seven M-class flares today

Several M-Class flares (7) took place during the day on Monday. Sunspot 1165 which is located in the southern hemisphere is in the process of rotating onto the western limb and will soon be out of direct earth view. Sunspot 1164 which is in the northern hemisphere

March 08, 2011

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Visible sunspots and equinox conjunction

Sunspots 1164 and 1166 are so large, people are noticing them at sunrise and sunset when the sun is dimmed by clouds and haze. The dark cores of these regions are many times wider than Earth, so they are conspicuous even from a distance of 93 million miles.

March 07, 2011

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NASA-sponsored research explains missing sunspots

WASHINGTON -- NASA-sponsored research has resulted in the first computer model that explains the recent period of decreased solar activity during the sun's 11-year cycle.This recent solar minimum, a period characterized by a lower frequency of sunspots and solar

March 02, 2011

65712 nasa image of the sun showing nearly simultaneous solar eruptions

Missing sunspots gathered NASA's scientist for briefing

NASA said it has rescheduled a media teleconference to Wednesday 2 pm EST to discuss the first computer model that explains the recent period of decreased solar activity during the sun's 11-year cycle.The recent solar minimum, a period characterized by a lower

March 02, 2011

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After M3 flare, active sunspots turned to Earth-side

New sunspot 1163 doesn't look very impressive, but the M3-class flare it unleashed yesterday was absolutely spectacular. Click Eastern Blast to download a movie recorded by NASA's Solar Dynamics Observatory. When the eruption occurred, sunspot 1163 was...

February 25, 2011

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Approaching active sunspot region aiming Earth

A significant active region is set to emerge over the sun's northeastern limb. The underlying sunspots are not yet visible from Earth, but the region's towering magnetic canopy is already in view. NASA's Solar Dynamics Observatory (SDO) took this picture...

February 24, 2011