emission nebula N44----250 light year hole.

[harry]

250 light year hole

apod link:
http://antwrp.gsfc.nasa.gov/apod/ap060206.html

This is huge, wow is the word.

I would tend to agree with the expanding shells of a supernova creating the hole.

My question is:

Why did it not somehow close off during the 250 or possibly 500 year period?

There must be very little gravitational influences not to disturb the hole.

[ta152h0]

You are asking questions mere mortals cannot answeer. being you are a scientist, we should be asking you

[harry]

Smile,,,,,,,,,,I have answered,,,,,,,,,,

but! there are always questions about the universe.

and

maybeeees

[orin stepanek]

Has anybody noticed that some of the stars seem to have cloudy halos around them?
Orin

[harry]

Hello Orin

Smile,,,,,,,,,good point no 96

Did not notice it,,,,,,,,,,,,,,looked at the big picture

Seen the forest but not the trees.

[kovil]

Surely you noticed the large group of stars in the middle of the hole.
They provide ample solar wind to blow the very lite particles and gasses and dust away from them and the hole, and keep them at bay against gravity.
The question was, what started the material up to the speeds it is presently going? Solar winds would not be sufficient. Several novas would, possibly. A section of the cloud is producing hot xrays, and solar wind will not induce this phenomena.

[harry]

Hello Kovil

250 light year hole would not be affected by solar winds.

It would have been the original nova

Any other Nova would destroy the shape.

As for stars in the centre, are they in the centre ,forward or back.

Some of these stars would attract the clouds, as you see some streaking in.