The solar events of the last 24 hours :
- Solar activity has been eruptive during the past 24 hours, featuring nine C flares. The brightest flare (C3.6) peaked at 04:28 UT on September 4 and was produced by NOAA AR 11837 like most C flares in this period. More C flares are likely within the next 48 hours, with a slight chance for an M flare, especially from NOAA AR 11837.
- The solar wind speed ranged between 380 and 480 km/s in the past 24 hours.
- In the same period, the Interplanetary Magnetic Field decreased from around 8 to 4 nT.
- Currently, on the Sun can be identified 4 active regions with sunspots .
The geomagnetic activity was at quiet levels during the past 24 hours. Quiet conditions are expected for September 4 to 6, with a chance for active periods on September 5, due to the effects of a Coronal Hole high speed stream.
#sun #online #sponli
Equipment : Coronado 90 + SBIG 8300s + LX75
Date : 09/04/13
Time GMT : 12:30:00
Exposure 0.09 sec .
With SPONLI Space is getting closer !
Image Credit: NASA, ESA, Hubble Heritage Team (STScI/AURA), and IPHAS
Will this caterpillar-shaped interstellar cloud one day evolve into a butterfly-shaped nebula? No one is sure. What is sure is that IRAS 20324+4057, on the inside, is contracting to form a new star. On the outside, however, energetic winds are blowing and energetic light is eroding away much of the gas and dust that might have been used to form the star. Therefore, no one is sure what mass the resulting star will have, and, therefore, no one knows the fate of this star. Were the winds and light to whittle the protostar down near the mass of the Sun, the outer atmosphere of this new star may one day expand into a planetary nebula, possibly even one that looks like a butterfly. Alternatively, if the stellar cocoon retains enough mass, a massive star will form that will one day explode in a supernova. The eroding protostellar nebula IRAS 20324+4057 spans about one light year and lies about 4,500 light years away toward the constellation of the Swan (Cygnus). The above image of IRAS 20324+4057 was taken with the Hubble Space Telescope in 2006 but released last week. The battle between gravity and light will likely take over 100,000 years to play out, but clever observations and deductions may yet yield telling clues well before that.