Answers to the questions of the hole of a nebula

Credit: NASA, ESA, V. Ksoll and D. Gouliermis (Universität Heidelberg), et al.; Processing: Gladys Kober (NASA/Catholic University of America)
Credit: NASA, ESA, V. Ksoll and D. Gouliermis (Universität Heidelberg), et al.; Processing: Gladys Kober (NASA/Catholic University of America)

News! After discovering a mysterious Superbubble in a nebula, more precisely, a hole in a nebula, astronomers study these details carefully. Specifically, the N44 nebula, discovered by Hubble. Many say it was formed due to stellar winds in the area, others say about the explosion, but it is not known exactly what it is. And there are contradictions in all of them. But you can find out more about them in our old article here: 

The Hubble Telescope amazes us again with a fabulous image, of course, captured by him. The Hubble Telescope captured a nebula, called the N44 on November 2, 2021, in an extraordinary position. Hubble's Surprised Nebula (N44) is a complex nebula filled with glowing hydrogen gas, dark dust bands, massive stars, and many star populations of various ages, according to NASA. This image is the most recent image captured by Hubble with a Nebula.

Hubble caught her in a very good position, because that's how we can see the gap in her middle, which is called "superbula". That void is simply a hole in the nebula through which everything behind the nebula can be seen. As you can see, this gap is very small in the image, but it is not so in reality. The Hubble Telescope surprised this nebula from an extremely long distance, so the hole is much larger than seen in the picture. According to NASA, the hole is 250 light-years wide! Because it is so large, its appearance is still a mystery.

More details here:

1) The reddish-brown part that is inside the blue part, is as hot as the blue part, or does it have a completely different temperature and what is it called? - Andacs Robert Eugen (Bailey Universe director)

The image follows chromatic ordering. This means that red represents the lowest energy data and blue the highest energy data in the image. So no, they are not the same temperature. - Claire Andreoli (NASA's Goddard Space Flight Center)

2) If in time, the nebula can disintegrate due to possible stellar explosions? - Andacs Robert Eugen (Bailey Universe director)

Supernovae (the death explosions of massive stars) create more gas and dust, so they tend to enrich nebulae rather than deplete them. However, if you are asking if a supernova or supernovae possibly created the superbubble, astronomers are still researching that possibility. - Claire Andreoli (NASA's Goddard Space Flight Center)

3) You said that it is difficult to say that stellar winds could have created the hole in the nebula, which is in contradiction with the speed of stellar winds, it could not have been that in the past there may be a higher speed of stellar winds and maybe even now, thus making the hole and if so, what could increase or decrease their speed? - Andacs Robert Eugen (Bailey Universe director)

This is a great question. Simply put, all hot stars have winds driven by radiation; so a change in radiation yields a change in their winds. If we look at the components of the light given off by the stars in the bubble (a process called spectroscopy) we can determine their types and ages. Knowing what type of stars they are also tells us how they evolve, which gives us an indication of their stellar wind velocities over time. Astronomers doing this research found inconsistencies in the size of the bubble and the expected velocities of the winds from the central cluster of massive stars. - Claire Andreoli (NASA's Goddard Space Flight Center)

All of the above questions refer to the image above. With these answers from NASA, you may have clarified many questions. Surely many of you have asked yourself the 3 questions and you also have answers from NASA. However, many astronomers still have to discover and it may take longer or in some cases less. However, we hope that in the end, astronomers will discover all the mysteries of the nebulae and its components. 

We wish them success and thank NASA for these answers, we also wish astronomers to discover as much as possible. 

Article by: Andacs Robert Eugen, on 10 November 2021, at 09:05 am Los Angeles time

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