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#920459 - 05/19/17 02:51 AM Nebulae
Mona - Astronomy Offline
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Wolf

Registered: 05/01/10
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Loc: United Kingdom

Nebulae are titanic clouds of gas and dust – celestial gossamer in the spaces between the stars. They're stellar nurseries, stellar graveyards and dark constellations. Some of their mysteries have been penetrated by infrared telescopes, but the cloaking dust still keeps some secrets.

Nebulae
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#920490 - 05/20/17 12:10 AM The Spaghetti Nebula [Re: Mona - Astronomy]
Mona - Astronomy Offline
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Wolf

Registered: 05/01/10
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Have a look at Simeis 147 nicknamed the Spaghetti Nebula. It's about 3000 light years away on the border between the constellations Auriga and Taurus and around 150 light years across. The nebula is a remnant from a supernova explosion that happened some 40,000 years ago. In addition to the expanding debris of the remnant, there is a neutron star formed from the core of the original massive star.

Image Credit & Copyright: Daniel López / IAC
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#920491 - 05/20/17 01:47 AM Re: The Spaghetti Nebula [Re: Mona - Astronomy]
Nancy Roussy Online   content
Modern Day Human

Registered: 01/17/13
Posts: 12871
Loc: Grand-Métis, Quebec, Canada
Oh wow!

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#920546 - 05/21/17 08:26 PM Re: Nebulae [Re: Mona - Astronomy]
Mona - Astronomy Offline
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Wolf

Registered: 05/01/10
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The Horsehead Nebula lies some 1500 light years away in the constellation Orion. The black silhouette resembling a horse's head is made up of dense gas and dust. It's known as a dark nebula and is visible because it blocks the light from background stars.

The red nebula is an emission nebula - it glows red because hydrogen gas emits red light when it's energized by nearby hot stars. A blue nebula is a reflection nebula, preferentially reflecting the blue part of the spectrum from nearby stars. On the left hand side of this image is the Flame Nebula.

Williamina Fleming, working at Harvard College Observatory, discovered the Horsehead Nebula in 1888. May 15 this year marked the 160th anniversary of Fleming's birth.

Image Credit & Copyright: José Jiménez Priego
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#920556 - 05/22/17 01:11 AM Re: Nebulae [Re: Mona - Astronomy]
Nancy Roussy Online   content
Modern Day Human

Registered: 01/17/13
Posts: 12871
Loc: Grand-Métis, Quebec, Canada
Wow!

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#920602 - 05/23/17 09:26 AM Re: Nebulae [Re: Mona - Astronomy]
Mona - Astronomy Offline
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Wolf

Registered: 05/01/10
Posts: 5567
Loc: United Kingdom
Have a look at at the Horseshoe Bend of the Colorado River. But where did the ray of white light in the center come from that seems to go upward from the central horizon? That's a band of dust in the inner Solar System that reflects light from the inner Solar System - it's called zodiacal dust.

Quote:
At certain times of the year, this band of dust rises prominently before sunrise - the dust originates mostly from faint Jupiter-family comets and slowly spirals into the Sun. Emitted from well behind the zodiacal light is a spectacular sky that includes many bright stars including Sirius, several blue star clusters including the Pleiades, and an assortment of red nebula including Barnard's Loop in Orion. This image is a 30-image composite.


If you were in place and wanted to see this object, what could you see in a really good telescope?

https://apod.nasa.gov/apod/image/1705/HorseShoeSky_Lane_960_annotated.jpg


Edited by Mona - Astronomy (05/23/17 09:52 PM)
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#920604 - 05/23/17 10:42 AM Re: Nebulae [Re: Mona - Astronomy]
Nancy Roussy Online   content
Modern Day Human

Registered: 01/17/13
Posts: 12871
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Amazing!

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#920669 - 05/25/17 10:48 AM Re: Nebulae [Re: Mona - Astronomy]
Mona - Astronomy Offline
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Wolf

Registered: 05/01/10
Posts: 5567
Loc: United Kingdom
It's the intriguing Soap Bubble Nebula located off in the constellation Cygnus the Swan. It's so newly recognized that it hasn't been been properly catalogued yet. It's probably a planetary nebula, a type of nebula formed when a dying sunlike star sloughs off its outer layers.

Credit & Copyright: T. Rector (U. Alaska Anchorage), H. Schweiker (WIYN), NOAO, AURA, NSF
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#920675 - 05/25/17 12:02 PM Re: Nebulae [Re: Mona - Astronomy]
Nancy Roussy Online   content
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Registered: 01/17/13
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As usual all I can say is wow!

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