Emission Nebulae

Gas Expression – Visual, Photographic, and Astrophysical

In this blog, we will discuss both how these gases turn up on our camera, and how astrophysics/spectroscopy identify and measure them. You will see that sometimes what we think we know is based on rock solid “DNA” evidence, while in many other cases, the evidence is purely circumstantial. For ease of explanation I will actually perform this task in reverse – like a mock trial – explaining what we believe the gases are and then the evidence that supports it. At the end, you may just interpret our astrophotographic images a little differently. In the vast expanse of our Milky Way, gases form the invisible backbone, shaping everything from star formation to galactic structure. They are the subject matter

The Thermodynamic Model of the Eagle Nebula

What is the Eagle Nebula Really? For centuries, astronomy has painted outer space as a vast, empty void—a place where gravity, momentum and light reign supreme, and gases are mere footnotes. This view, rooted in classical models, has shaped how we interpret the creation of stars and the evolution of nebulae. But what if this perspective is incorrect? What if there is no such thing as empty space and that invisible gases fill our galaxy. What if gases are the true architects of cosmic creation? The completely free and unoccupied view of outer space has held right up to the 21st century and has divorced astronomy from the rest of science. Astronomy had no need for the fields of thermodynamics,

A Galaxy of Dynamic Gases

The success of n-body numerical simulation to predict the motion of planets and stars cannot be denied. At the same time, the erroneous application of these model to intra-galactic objects and galaxies themselves have led to a popular narrative that is full of magic and other non-sense. In this ambitious posting, I have put together the astrophysical data in a different way – one that looks at objects from a more scientific and engineering point of view. This data has been used to show that the various objects in space should be considered as continuum bodies, rather than collections of particles. Classical physical laws and concepts are used to show how and why many of the phenomenon we see and

Anatomy of the Orion Nebula – Imaging and imagining 3-D Gas Bodies

It is easy to forget that our 2-D images are actually representations of 3-D gas bodies, that are acting according to 4-D dynamics. In day to day life, we have many clues that we can rely upon including parallax views, perspective rules, lights and shadows, and actual physical interaction that we can use to assess the nature of objects in 3-D and 3+1 space. Unfortunately many of these clues are absent or confusing in our deep space objects. In this post, we analyze a 2-D image of the Great Orion Nebula and stellar nursery including its shape and orientation in 3-D space. Along the way, we will present an understanding of the three principle gas types in deep space photography

Thermodynamic Cloud Collapse & Me vs Gravity & Grok

Since I began working on this website, I have been using AI to fetch equations, data, and history. In general, I don’t bother discussing things much with AI, because typically AI relies on authority – number of journal articles, citations, simulations, status indicators, and other non-scientific bases to form its opinions. Me, on the other hand, I take the Richard Feynman philosophy that “Science is the belief in the ignorance of experts“. If AI believes you are straying from its narrative, it tries to “correct” you and actually let you know that what you are asking for is wrong. It finds something it agrees with, and then, tries to interject that it was at least somewhat right all along. It

Abell 39: A planetary nebula and the most perfect sphere in the night sky

Discover the mesmerizing beauty of Abell 39, a planetary nebula renowned for its stunning spherical shape. While many nebulae are complex and chaotic, Abell 39 stands out as a rare gem in the night sky. This article delves into the fascinating evolution of stars, from their fiery beginnings as main sequence stars to their transformation into white dwarfs and the breathtaking nebulae they leave behind. Join us on a journey through the cosmos, exploring the intricate processes that create these celestial wonders and the vital role they play in the universe’s grand tapestry.

The Anatomy of a Stellar Nursery

Introducing the Rosette Nebula / Stellar Nursery When I first started to image stellar nurseries, I really didn’t know anything about them. I was told that stars are being born there – that is pretty awesome, but I was curious what was it about these light generating molecular clouds (MCs) that made them prolific star builders. Sure, stars are also created in turbulent dark molecular clouds, but stellar nurseries really churn out the stars at a much higher level – often creating whole open clusters of stars. Many of the stellar nurseries get very large and can even be mapped from their Halpha light signal in other galaxies. Ok, so my interest was piqued – I had to figure out

« Previous