All in the Family

Hundreds of TPODs have been published since the summer of 2004. In particular, we invite discussion of present and recent TPODs, perhaps with additional links to earlier TPOD pages. Suggestions for future pages will be welcome. Effective TPOD drafts will be MORE than welcome and could be your opportunity to become a more active part of the Thunderbolts team.

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allynh
Posts: 919
Joined: Fri Aug 22, 2008 5:51 pm

All in the Family

Unread post by allynh » Fri Jun 15, 2012 9:58 am

This is another TPOD that relates to my question in an earlier thread:

Electric Spheres
http://www.thunderbolts.info/wp/forum/phpB ... f=7&t=6019

The list of nearby stars in the TPOD made me pull up the wikipage, which cascaded more wikipages to harvest. The thing that caught my eye was the concept of the "Local Bubble".
Local_bubble 1.jpg
Local Bubble wrote: The Local Bubble is a cavity in the interstellar medium (ISM) of the Orion Arm of the Milky Way. It is at least 300 light years across and has a neutral hydrogen density of about 0.05 atoms per cubic centimetre, or approximately one tenth of the average for the ISM in the Milky Way (0.5 atoms/cc), and half that for the "Local Fluff", or Local Interstellar Cloud (0.1 atoms/cc). The hot diffuse gas in the Local Bubble emits X-rays.
Local Interstellar Cloud wrote: The Local Interstellar Cloud (or Local Fluff) is the interstellar cloud roughly 30 light years or 9.2 Parsecs across through which the Earth's solar system is currently moving. The Solar System is thought to have entered the Local Interstellar Cloud at some time between 44,000 and 150,000 years ago and is expected to remain within it for another 10,000 to 20,000 years. The cloud has a temperature of about 6000 °C,[1] about the same temperature as the surface of the Sun. It is very tenuous, with 0.1 atoms per cubic centimeter; approximately one-fifth the density of the galactic interstellar medium (0.5 atoms/cc), but twice that of the gas in the Local Bubble (0.05 atoms/cc). The Local Bubble is an area of low-density in the interstellar medium, with the Local Cloud a small, more dense area. In comparison, Earth's atmosphere at STP has 2.7 × 1019 molecules per cubic centimeter.
Ignore the consensus discussion of age and supernovae, and look at it as a recent EU phenomenon.
nebula.jpg
- Are we inside of a nebula looking out?

This is another area of discussion that I'd like the Team to expand on in more essays.

Thanks...

List of nearest stars
http://en.wikipedia.org/wiki/List_of_nearest_stars

Local Bubble
http://en.wikipedia.org/wiki/Local_Bubble

Local Interstellar Cloud
http://en.wikipedia.org/wiki/Local_Interstellar_Cloud

Loop I Bubble
http://en.wikipedia.org/wiki/Loop_I_Bubble

Scorpius-Centaurus Association
http://en.wikipedia.org/wiki/Scorpius-C ... ssociation

Superbubble
http://en.wikipedia.org/wiki/Superbubble

Sparky
Posts: 3517
Joined: Tue Jul 20, 2010 2:20 pm

Re: All in the Family

Unread post by Sparky » Fri Jun 15, 2012 3:34 pm

- Are we inside of a nebula looking out?
That's an interesting thought..... ;)
Nebulae are clouds of gas and dust.
Nebula comes from the Latin word for cloud.

Nebulae range in size from millions of miles across to hundreds of light years across.

The Orion Nebula is the closest star forming region to Earth, it lies 1,500 light years away and is thought to be around 25 light years across.

The Crab Nebula is the remnant of a supernova explosion that was witnessed by Chinese astronomers in 1054.

Extra-galactic nubulae exist outside the Milky Way such as the Tarantula Nebula, which is found in a neighboring galaxy called the Large Magallenic Cloud.
I guess it is quite possible.... :? ...but, how would one know?

idonno :?
"It is dangerous to be right in matters where established men are wrong."
"Doubt is not an agreeable condition, but certainty is an absurd one."
"Those who can make you believe absurdities, can make you commit atrocities." Voltaire

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