Astronomy Picture of the Day

The N44 Superbubble

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#84330 by @ 07.02.2006 00:00 - nach oben -
The N44 Superbubble

What created this gigantic hole?

The vast emission nebula
N44 in our neighboring galaxy the
Large Magellanic Cloud has a large, 250
light-year hole and astronomers are trying to figure out why.

One possibility is
particle winds
expelled by massive stars in the
bubble's interior that are pushing out the
glowing gas.

This answer has been
recently found to be inconsistent with measured wind velocities, however.

Another possibility is that the expanding shells of old
have sculpted the unusual space cavern.

An unexpected clue of hot
emitting gas was recently been detected escaping the
N44 superbubble.

The above image, here digitally sharpened, was taken in
three very specific colors by the
huge 8-meter
Gemini South Telescope on
Cerro Pachon in

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