Moderate Labor Day solar flare eruption

September 7, 2011 By Karen C. Fox
Moderate Labor Day solar flare eruption
The flare is seen here near the center of this image from SDO's Atmospheric Imaging Assembly instrument. The graph at the bottom represents GOES data showing the increase in x-ray emission as the flare erupted. Credit: NASA/SDO/LMSAL/GOES

At 9:35 PM ET on September 5, 2011, the sun emitted an Earth-directed M5.3 class flare as measured by the GOES satellite. The flare erupted from a region of the sun that appears close to dead center from Earth's perspective, an active region designated number 1283. The flare caused a slight increase of solar energetic protons some 26,000 miles above Earth's surface.

A (CME) -- another solar phenomenon that can send into space -- was associated with this flare. The CME is a relatively slow one, traveling at under 200 miles per second.

Further updates on the event will be provided as they become available.

Explore further: STEREO Reveals Solar Storm Related to Failure Aboard Communications Satellite

More information: What is a solar flare? What is a coronal mass ejection?

For answers to these and other space weather questions, please visit the Spaceweather Frequently Asked Questions page.

Related Stories

Sunspot 1121 unleashes X-ray flare

November 11, 2010

Active sunspot 1121 has unleashed one of the brightest x-ray solar flares in years, an M5.4-class eruption at 15:36 UT on Nov. 6th.

NASA sees the sun having a solar blast (w/ video)

June 7, 2011

The Sun unleashed an M-2 (medium-sized) solar flare, an S1-class (minor) radiation storm and a spectacular coronal mass ejection (CME) on June 7, 2011 from sunspot complex 1226-1227. The large cloud of particles mushroomed ...

Sun celebrates solstice with flare and CME

June 22, 2011

( -- Late in the evening on June 20 the sun emitted a long lasting C7.7 small class flare that peaked around 11:25p.m. EDT. A C-class flare is a relatively small flare.

Solar flares: What does it take to be X-class?

August 10, 2011

Solar flares are giant explosions on the sun that send energy, light and high speed particles into space. These flares are often associated with solar magnetic storms known as coronal mass ejections (CMEs). The number of ...

Recommended for you

What are white holes?

October 9, 2015

Black holes are created when stars die catastrophically in a supernova. So what in the universe is a white hole?

How to prepare for Mars? NASA consults Navy sub force

October 5, 2015

As NASA contemplates a manned voyage to Mars and the effects missions deeper into space could have on astronauts, it's tapping research from another outfit with experience sending people to the deep: the U.S. Navy submarine ...

A mission to a metal world—The Psyche mission

October 9, 2015

In their drive to set exploration goals for the future, NASA's Discovery Program put out the call for proposals for their thirteenth Discovery mission in February 2014. After reviewing the 27 initial proposals, a panel of ...


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.