Daily Archives: September 15, 2013

The Sun Online and solar activity. September 15, 2013

Solar activity continues to be very low, no changes foreseen. Geomagnetic conditions have been quiet, they are expected to remain so until the arrival of the fast speed from a coronal hole in about 48h.

Local time:9/15/2013 at 7:46:53 Local time:9/15/2013 at 7:46:53 Local time:9/15/2013 at 7:46:53 Local time:9/15/2013 at 7:46:53

Equipment: Coronado 90 + SBIG 8300s + LX75
Editor: Photoshop
Date: 15/09/13
Time GMT: 11:30:00
Exposure 0.09 sec.

With SPONLI Space is getting closer!

M2-9: Wings of a Butterfly Nebula


Credit: Hubble Legacy Archive, NASA, ESA – Processing: Judy Schmidt

Explanation: Are stars better appreciated for their art after they die? Actually, stars usually create their most artistic displays as they die. In the case of low-mass stars like our Sun and M2-9 pictured above, the stars transform themselves from normal stars to white dwarfs by casting off their outer gaseous envelopes. The expended gas frequently forms an impressive display called a planetary nebula that fades gradually over thousand of years. M2-9, a butterfly planetary nebula 2100 light-years away shown in representative colors, has wings that tell a strange but incomplete tale. In the center, two stars orbit inside a gaseous disk 10 times the orbit of Pluto. The expelled envelope of the dying star breaks out from the disk creating the bipolar appearance. Much remains unknown about the physical processes that cause planetary nebulae.