Solar watch - page 4


Ups and downs in the daily minimum solar irradiance

With quite regular intervals of about 27 days which Sun takes to make full rotation circle, the Sun alternates between an active hemisphere with relatively many sunspots , and a hemispheric "face" that is pretty much void of these dark blemishes. For as long as it

December 03, 2012


International Space Station maneuvers to record the complete rotation of Sun

This weekend the International Space Station will turn itself to position ESA’s SOLAR instrument for a better view of the Sun. This would be the first time ISS has changed attitude for scientific reasons alone.SOLAR instrument was installed on ESA’s Columbus

December 01, 2012


Our magnificent Sun - Solar cycle 24

The solar cycle (or solar magnetic activity cycle) is the periodic change in the sun's activity (including changes in the levels of solar radiation and ejection of solar material) and appearance (visible in changes in the number of sunspots, flares, and other

November 30, 2012

JHeliowiever featured image

JHelioviewer software: A different way to watch the Sun

JHelioviewer is visualization software that enables everyone, anywhere to explore the Sun. Developed as part of the ESA/NASA Helioviewer Project, it provides a desktop program that enables users to call up images of the Sun from the past 15 years. Software contains

November 24, 2012


Prominent view

The Sun is constantly roiling with nuclear heat and intense magnetism that make sunspots, flares, coronal mass ejections, and all sorts of space weather. When directed toward Earth, those solar blasts can disrupt satellite and radio communications, damage our

November 23, 2012


SOHO's Greatest Hits - Volumes 1 - 6

The following images are a compilation of the best anomalies found from the SOHO probe by SolarWatcher. SOHO, the Solar & Heliospheric Observatory, is a project of international collaboration between ESA and NASA to study the Sun from its deep core to the

November 22, 2012


ESA's Proba-2 recorded three partial solar eclipses last night

Proba-2 sun observing satellite experienced three partial solar eclipses last night while ground-observers watching from northern Australia witnessed a total solar eclipse. ESA's Proba-2 satellite passed through the Moon’s shadow a total of three times during the

November 14, 2012


This November brings total solar eclipse and penumbral lunar eclipse

November brings us two eclipses in the month. Total solar eclipse will occur on November 13 and penumbral lunar eclipse on November 28, 2012. On November 13, residents of northeastern Australia will see the sun fully obscured by the moon, whose shadow will darken the

November 09, 2012


Solar monitors offline due the superstorm impact on US East Coast

While most are focused on Sandy and its epic impact on US East Coast those of you focused on space weather events have probably noticed that there is blackout of solar observing data providers. The SDO, SOHO, STEREO and Helioviewer sites are all offline. Websites are

October 30, 2012

gradient sun

Visualization of Sun's magnetic fields: Gradient Sun

NASA’s Goddard Space Flight Center’s visualization studio made an amazing video of Sun using a gradient filter which highlighted the details of the sun's complex magnetic fields. Gradient filter helps researchers in better understanding how solar activity affects

October 22, 2012

oct7_2012_c1 approaching region

M-class solar flare measuring M2.3 erupted today - G2 class geomagnetic storm in progress

An M-class solar flare erupted on October 8, 2012 at 11:17 UTC. The event started at 11:05, peaked at 11:17 and ended at 11:23 UTC. The source of this flare is probably a new region on Sun's northeastern limb rotating into Earth's view. Coronal Mass Ejection (CME)

October 08, 2012


Earth-directed partial halo CME should reach our magnetic field late on October 8

A long duration B7.5 solar flare was observed at 07:30 UTC on October 5. Post eruption loop structures were observed in GOES SXI imagery in the vicinity of Region 1584. A partial halo CME was first observed in SOHO/LASCO C3 imagery at 07:30 UTC and STEREO Ahead

October 06, 2012

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CME impact & G3 class geomagnetic storm - October 1, 2012

The September 28th Coronal Mass Ejection (CME) impacted Earth's magnetic field at 22:20 UTC last night, September 30, 2012 sparking strong Geomagnetic storms at high latitudes today. The Bz component of the interplanetary magnetic field (IMF) sharply deviated to -35

October 01, 2012


M1.3 and C9.9 solar flares occurred while Earth expects impact of September 28 CME

Sunspot 1583 on the western limb produced an M1.3 flare on Sept. 30 at 04:33 UTC. Region 1583 had grown rapidly in the past 24 hours, however it is only hours away from rotating off the solar disk and out of view. SIDC and NOAA/SWPC expect mostly eruptive conditions

October 01, 2012


Sun unleashed M1.3 solar flare, Sept.28 CME arrived

M1.3 solar flare occurred at 04:33 UTC on September 30., 2012 More updates in coming minutes! Meanwhile, the Earth-directed coronal mass ejection (CME) associated with the filament eruption near end-of-day September 28th has arrived.  Geomagnetic storm

September 30, 2012

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CME from September 28 eruption heading toward Earth

Sunspot 1577 generated a long duration C3.7 solar flare which hurled a coronal mass ejection (CME) almost directly toward Earth on September 28. Proton levels reached the S1 Minor Radiation Storm level soon after the event. The proton event linked to the C3.7 flare

September 30, 2012


Video of August 31 CME traveling through space

Anyone who observes solar activity here and there surely noticed spectacular solar filament on August 31, 2012. We saw amazing images presented to us by solar observatories in space and now SOHO combined all recordings from EUVI, COR1, COR2 and HI1 that give us clear

September 11, 2012