A fiery drama of star birth and death

Nov 27, 2013
The Large Magellanic Cloud is one of the closest galaxies to our own. Astronomers have now used the power of the ESO's Very Large Telescope to explore NGC 2035, one of its lesser known regions, in great detail. This new image shows clouds of gas and dust where hot new stars are being born and are sculpting their surroundings into odd shapes. But the image also shows the effects of stellar death -- filaments created by a supernova explosion (left). Credit: ESO

The Large Magellanic Cloud is one of the closest galaxies to our own. Astronomers have now used the power of ESO's Very Large Telescope to explore one of its lesser known regions. This new image shows clouds of gas and dust where hot new stars are being born and are sculpting their surroundings into odd shapes. But the image also shows the effects of stellar death—filaments created by a supernova explosion.

Located only about 160 000 light-years from us in the constellation of Dorado (The Swordfish), the Large Magellanic Cloud is one of our closest galactic neighbours. It is actively forming new stars in regions that are so bright that some can even be seen from Earth with the naked eye, such as the Tarantula Nebula. This new image, taken by ESO's Very Large Telescope at the Paranal Observatory in Chile, explores an area called NGC 2035 (right), sometimes nicknamed the Dragon's Head Nebula.

NGC 2035 is an HII region, or emission nebula, consisting of clouds of gas that glow due to the energetic radiation given off by young stars. This radiation strips electrons from atoms within the gas, which eventually recombine with other atoms and release light. Mixed in with the gas are dark clumps of dust that absorb rather than emit light, creating weaving lanes and dark shapes across the nebula.

The filamentary shapes to the left in the image are the not the results of starbirth, but rather stellar death. It was created by one of the most violent events that can happen in the Universe—a . These explosions are so bright that they often briefly outshine their entire host galaxy, before fading from view over several weeks or months.

From looking at this image, it may be difficult to grasp the sheer size of these clouds—they are several hundred light-years across. And they are not in our galaxy, but far beyond. The Large Magellanic Cloud is enormous, but when compared to our own galaxy it is very modest in extent, spanning just 14 000 light-years—about ten times smaller than the Milky Way.

This image was acquired using the FOcal Reducer and low dispersion Spectrograph instrument attached to ESO's Very Large Telescope, which is located at the Paranal Observatory in Chile, as part of the ESO Cosmic Gems programme.

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cantdrive85
1 / 5 (9) Nov 27, 2013
NGC 2035 is an HII region, or emission nebula, consisting of clouds of gas that glow due to the energetic radiation given off by young stars. This radiation strips electrons from atoms within the gas, which eventually recombine with other atoms and release light. Mixed in with the gas are dark clumps of dust that absorb rather than emit light, creating weaving lanes and dark shapes across the nebula.

Plasma glows for the same reason fluorescent lights glow, electric currents excites the "gas". The "dark" clumps are due to the FACT that plasma has three modes, arc, glow, and dark mode. The current density in the dark regions is too low to induce a glow or arc discharge, however the dark mode of plasma is still an electric discharge.
NOM
3 / 5 (2) Nov 27, 2013
So cantthink85. Is your EU crap is all based on complete misunderstanding of chemistry and physics? Or is it a mental illness?
obama_socks
1 / 5 (9) Nov 27, 2013
@cantdrive
I'm not familiar with the EU hypothesis, but whatever little I know of it is interesting nevertheless. I try not to discount any theories and prefer to investigate them if possible. Who knows, there might be a little truth to it.

Anyway, are you saying that an electric current(s) is passing through all that dust and gas to make it glow, and not just heat and light from exploding stars? Where does the electric current come from and does it have the same properties as electricity from the grid?

I have a Lava Lamp that has reddish-orangey oil in the bottle. When the light is turned on and the oil heats up, the thousands of tiny silver metal pieces swirl around and give off glints of light. I have several Lava Lamps that my wife had bought for me while we were married back then. Anyways, the above image kind of makes me think of that one Lava Lamp because of all the stars in the article's image.

Somehow, I can't imagine an electric current going through galaxies.