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NASA Astronomy Picture of the Day:

A mere seven hundred light years from Earth, toward the constellation Aquarius, a sun-like star is dying. Its last few thousand years have produced the Helix Nebula (NGC 7293), a well studied and nearby example of a Planetary Nebula, typical of this final phase of stellar evolution. A total of 90 hours of exposure time have gone in to creating this expansive view of the nebula. Combining narrow band image data from emission lines of hydrogen atoms in red and oxygen atoms in blue-green hues, it shows remarkable details of the Helix's brighter inner region about 3 light-years across. The white dot at the Helix's center is this Planetary Nebula's hot, central star. A simple looking nebula at first glance, the Helix is now understood to have a surprisingly complex geometry.

Photo by Ignacio Diaz Bobillo

I Desire

Posted by MFish • Profile • 10/13/21 at 10:27PM • Life Stories - Memories • See more by MFish

I desire to do water colors,
I want to paint.
I bought materials,
brushes, pencils and pens,
with watercolor kits, as I
like to paint, Plein Air,
on in the field.
I have brief pencil sketches,
to keep the site in mine,
but find I no longer have the time.
I know it's a thin excuse,
but it is what it is.
Some day it will happen,
of this I am sure.

A Comment by Carl

Your avatar
Carl • 10/14/2021 at 04:50PM • Like 1 • Profile

Great idea!

NASA Astronomy Picture of the Day:

It may look like a huge cosmic question mark, but the big question really is how does the bright gas and dark dust tell this nebula's history of star formation. At the edge of a giant molecular cloud toward the northern constellation Cepheus, the glowing star forming region NGC 7822 lies about 3,000 light-years away. Within the nebula, bright edges and dark shapes stand out in this colorful and detailed skyscape. The 9-panel mosaic, taken over 28 nights with a small telescope in Texas, includes data from narrowband filters, mapping emission from atomic oxygen, hydrogen, and sulfur into blue, green, and red hues. The emission line and color combination has become well-known as the Hubble palette. The atomic emission is powered by energetic radiation from the central hot stars. Their powerful winds and radiation sculpt and erode the denser pillar shapes and clear out a characteristic cavity light-years across the center of the natal cloud. Stars could still be forming inside the pillars by gravitational collapse but as the pillars are eroded away, any forming stars will ultimately be cut off from their reservoir of star stuff. This field of view spans over 40 light-years across at the estimated distance of NGC 7822.

Photo by Yizhou Zhang

It Hung

Posted by MFish • Profile • 10/12/21 at 09:15PM • Nature - Plants - Wildlife • See more by MFish

It hung by a stem
to the bare branch above.
It was the last leaf
on the bare limb
of the tree.
Surprising, for we had,
wind gusts and much rain.
The leaves in the Summer,
were a lovely shade of green.
When fall arrived, it was cold
and the night temperatures dropped.
We witness the change, in colors,
bright yellow, red in the leaves
before they fall to the ground.
Yet, here is a lonely leaf,
the last of its kind of this tree,
and a barren branch,
awaiting to fly.

Snohomish, Skagit and Island County

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