304 Angstrom

October 19, 2014

The Big Spot Gives an X1.1 Solar Flare

Sunspot group, AR12192, released a strong burst of magnetic energy in the form of an X1.1 flare and a surge of solar plasma. The solar flare peaked in the GOES X-ray monitor at 5:01 UT, 10/19/2014. There was no significant
August 29, 2014

Earth is Eclipsing the Sun When Seen from Space

The Fall 2014 Eclipse SDO Eclipse Season starts today. Around 7:30 UT (2:30 EDT) each day for the next 3 weeks (until Sept. 21), Earth will pass between the Solar Dynamics Observatory (SDO) and the sun. The first eclipse is only
June 30, 2014

Solar Activity May Soon Be on the Rise

The active sun is rotating into view, that could mean there is solar fun to come. For the past 2 weeks that sun has been a bit quiet but that is only because the regions of current solar activity were
June 17, 2014

The Sun is really, really big!

A giant filament on the eastern edge of the sun really puts the size of our star, Earth and the planets into perspective. This structure of solar plasma, a billion plus tons of 80,000 degree Fahrenheit material, sits high above
June 5, 2014

Giant Filament Erupting into Space

A huge filament on the southeast of the sun erupted towards the end of June 4. The filament was somewhere between a whopping 500,000 – 1 million km in length. This eruption produced a fairly slow coronal mass ejection that
February 28, 2014

SDO Spring Eclipse Season 2014

It’s that time of year. SDO spring eclipse season started February 27, 2014. During the 3 week season, Earth will pass between SDO and the Sun around 07:30 UT each day. Initially the eclipses are a few minutes long. Their
January 29, 2014

AR11967 Keeps Up Activity – More M-flares Possible

AR11967 continues to stay lively. In less than 24 hours on Jan. 28, it produced 7 M-class solar flares. The largest flare was an M4.9 at 19:00 UT. Here is a video of composite 304, 171 and 193 angstrom SDO/AIA
January 28, 2014

It’s Back – AR11944 is back as AR11967

Sunspot group or active region AR11944 that gave us such a show at the beginning of the year is back. After taking its trip around the sun it has rotated onto the Earth facing solar disk and NOAA has labeled it
October 30, 2013

A Whole Lot Happening on the Sun – In Many Types of Light

The sun has been really active lately. SDO gives us an amazing view of this activity in many different wavelengths of light. This also shows us the sun’s atmosphere in many temperatures ranging from ~4500 Kelvin or 7600 degrees Fahrenheit
September 30, 2013

Spectacular Erupting Filament with Earth-directed Space Weather

A huge filament erupted from the sun producing a beautiful coronal mass ejection (CME) and solar energetic particle event. Around 21 UT, 9/29/2013 a filament erupted from the northwest quadrant of the sun. It started from the surface with a
August 20, 2013

Aurora Ahead? – Filament Eruption with an Earth-directed CME

There may be a geomagnetic storm in store for Earth. Lookout aurora watchers! A filament ~50 Earths in length (~400,000 miles) erupted from the Sun’s southern hemisphere in the southwest direction around 7:24 UT (4:24 am EDT). The eruption produced
August 17, 2013

M3.3 Solar Flare and a Coronal Mass Ejection

A long duration M3.3 flare with a beautiful eruption and CME! Active region AR11818 produced a flare peaking in X-ray at 18:24 UT (2:24 pm EDT). The eruption produced extended X-ray emission with another flare, ~M1.5 after the initial eruption
May 14, 2013

AR11748 Releases Yet Another X Flare – X1.2

The active region that could, has again given us an X flare! That makes 4! 12:15 UT – The NASA GSFC Space Weather Research Center has estimated that the CME may give a glancing blow to Epoxi (~5/18/2013 06:00 UT) and
November 7, 2012

Solar Activity Picks Up, Just a Bit

    An M1.7 flare peaked at 02:23 UT, November 8, 2012. This is not really a big flare but everybody’s attention picks up when the activity level reached M-class (mine included). I don’t yet know where the event came
June 29, 2012

Some Moderate Activity for June 28-29

Over the past 24 hours, sunspot group AR11513 has increased in complexity, producing several C-class flares and 2 M-class flares, an M2.4 on June 28 at 16:07 and an M2.2 on June 29 at 9:10 UT . Both AR11513 and
March 6, 2012

4 M-class Flares in a Row

Sunspot group, AR11429, started off its journey across the Earth facing side of the Sun with several bangs. First it produced an M flare on March 2 at 17:29 UT (with a CME) then came another M flare (with a
March 5, 2012

3 Days of AR11429 – Lots of Activity

Sunspot group AR11429! Here is a look at AR11429 from Friday to today showing the 2 M-class and 1 X-class flare blasting away from the Sun. In addition to those events and their associated CMEs there is a lot of