From AGU: comet ISON's struggle of Fire and Ice

San Francisco – After a year of observations, scientists waited with bated breath on Nov. 28, 2013, as Comet ISON made its closest approach to the sun, known as perihelion. Would the comet disintegrate in the fierce heat and gravity of the sun? Or survive intact to appear as a bright comet in the pre-dawn…

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Sun produces four X-class flares in two days

Above: note the four separate events in the last two days – from the WUWT Solar Page (From NASA’s Spaceweather.com) When the week began, the sun hadn’t unleashed an X-flare all year long. In only two days, sunspot AR1748 has produced four. The latest X-flare from this active sunspot occured on May 15th at 0152…

Three years of the Sun in three minutes

Spectacular three year time lapse video from the Solar Dynamics Observatory In the three years since it first provided images of the sun in the spring of 2010, NASA’s Solar Dynamics Observatory (SDO) has had virtually unbroken coverage of the sun’s rise toward solar maximum, the peak of solar activity in its regular 11-year cycle.…

The sun – still slumping

The latest solar cycle update graphs have been released by the NOAA SWPC today, and the anemic cycle 24 continues: The current count isn’t keeping up with the prediction line in red. Not only is the sunspot count low, so is the 10.7cm radio flux and the Ap magnetic index:

Solar corona revealed in super-high-definition

From the Harvard-Smithsonian Center for Astrophysics Today, astronomers are releasing the highest-resolution images ever taken of the Sun’s corona, or million-degree outer atmosphere, in an extreme-ultraviolet wavelength of light. The 16-megapixel images were captured by NASA’s High Resolution Coronal Imager, or Hi-C, which was launched on a sounding rocket on July 11th. The Hi-C telescope…

Still waiting for the CME from the X Class flare

Spaceweather.com writes: (link mine) The CME launched toward Earth by the July 12th X-flare has not yet arrived. However, we are still within the forecast window set by analysts at the Goddard Space Weather Lab. The cloud should hit at 09:17 UT plus or minus 7 hours on Saturday, July 14th. Weekend auroras are likely.…