Solar activity - page 34


A strong M9.3 solar flare took place

Sunspot AR1261 unleashed a brief but strong M9-class solar flare on July 30th at 0209 UT. NASA's Solar Dynamics Observatory recorded the flare's extreme ultraviolet flash:Because of its brevity, the eruption probably did not hurl a substantial CME toward Earth,

July 30, 2011

Cai Uso Wohler Ha2011 07 27 15h55UT 2_1311792137_med

Sun harbors energy for powerful X-class solar flares

Sunspot 1260 has developed a delta-class magnetic field that harbors energy for powerful X-class solar flares. Such an eruption today would be Earth-directed as the sunspot turns to face our planet.Sunspot 1260 is leading a parade of big sunspots across the solar

July 29, 2011


M-Class solar flare in effect

An M1.1 Solar Flare took place at 16:07 UTC Wednesday and was centered around Sunspot 1260. Click HERE for a still image captured by the GOES SXI. More to follow.iSwacNOAA SWPC Space Weather NowLatest Alert: Jul 27 1214 UTC CONTINUED ALERT: Electron 2MeV

July 27, 2011


Solar activity is picking up again

After more than a week of quiet, solar activity is picking up. NASA's Solar Dynamics Observatory is monitoring two big sunspot groups now emerging over the sun's eastern limb. Click on the image to view a 40-hour movie.The leading sunspot group, AR1260, is crackling

July 27, 2011

solar solar flare storm spot activity

Laws of physics must be rewritten: Mysterious sun particles alter radioactive decay on Earth

The scientific process, as any experienced researcher can attest, provides a kind of road map through the forest of the natural world. By developing hypotheses and designing methods by which to test them, we use the scientific process to make the abstract world more

July 24, 2011


Kp5 geomagnetic storm in progress!!!

The solar wind is at elevated levels and this may stir up minor activity at very high latitudes.Solar windspeed: 622.5 km/secdensity: 3.8 protons/cm3Planetary K-indexNow: Kp= 5 storm24-hr max: Kp= 5 stormInterplanetary Mag.

July 19, 2011

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Solar tsunami and dark fireworks on the Sun

On June 7, 2011, Earth-orbiting satellites detected a flash of X-rays coming from the western edge of the solar disk. Registering only "M" (for medium) on the Richter scale of solar flares, the blast at first appeared to be a run-of-the-mill eruption- that is, until

July 12, 2011


Behemoth sunspots evolve

The CME was not squarely Earth-directed and is not traveling at great speed, only minor geomagnetic storming is expected when the cloud arrives. A coronal mass ejection (CME) that billowed away from sunspot 1247 on July 9th could hit Earth's magnetic field on...

July 10, 2011


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


Sun produced a series of strong shortwave radio bursts

On July 7th, the sun produced a series of strong shortwave radio bursts. Click on the dynamic spectrum below to play a 21 MHz sample recorded by amateur radio astronomer Thomas Ashcraft in rural New Mexico. The action begins about 18 seconds into the 2-minute...

July 08, 2011


Sundiving comet

During the late hours of July 5th, an unnamed icy comet from the outer solar system dove into the sun and disintegrated. Click on the arrow to witness the death plunge recorded by coronagraphs onboard the Solar and Heliospheric Observatory (SOHO):Over the years,

July 06, 2011


A G1-class (Kp=5) geomagnetic storm is in progress

High-latitude sky watchers should be alert for auroras. A G1-class (Kp=5) geomagnetic storm is in progress.NOAA Space Weather Scale for Geomagnetic StormsSolar windspeed:

July 05, 2011

solar solar flare storm spot activity

A fast-moving stream of solar wind is buffeting Earth's magnetic field

A fast-moving stream of solar wind is buffeting Earth's magnetic field. The combined effect of this stream plus a CME expected to arrive on June 24th has prompted NOAA forecasters to declare a 30% to 35% chance of geomagnetic storms during the next 24 hours.

June 24, 2011


Geomagnetic storm warning!

A fast-moving stream of solar wind is buffeting Earth's magnetic field. The combined effect of this stream plus a CME expected to arrive soon has prompted NOAA forecasters to declare a 30% to 35% chance of geomagnetic storms on June 23-24. High-latitude sky watchers

June 23, 2011


Impact of solstice solar flare is expected on June 24th

A CME propelled toward Earth by the "solstice solar flare" of June 21st may be moving slower than originally thought. Analysts at the GSFC Space Weather Lab have downgraded the cloud's probable speed from 800 km/s to 650 km/s. Impact is now expected on June 24th at

June 22, 2011


Incoming solar flare, expecting geomagnetic storm

Magnetic fields above sunspot complex 1236 erupted during the early hours of June 21st, producing a C7-class solar flare and a full-halo CME. The expanding cloud appears to be heading almost directly toward

June 21, 2011


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