We see neither gods nor black holes but authorities say they exist.

@yvilletom - The image attached to this reply is my favorite image of the milky way. Though we may not be able to directly observe black holes, just as we are not able to directly observe the quarks that compose nuclides, we have evidence for both. In this image, an Radio Frequency snapshot of our galaxy, we see evidence of savage forces that give high sigma evidence for the existence of a black hole at the core of our galaxy. [nature.com]

I do apologize if your sensitivities are offended by the following statement, but please know that the postulation, hypotheses, and processes required by the scientific method, particularly for cosmological/astronomical observations, have a strong foundation in physics and mathematical methodologies and techniques.

I sincerely hardly see the parallels that you are trying to draw by stating that "authorities say they exist". I would strongly recommend that you reconsider your position on drawing such parallels when it comes to the topic of black hole, and cosmological studies.

The observed galactic bubbles in the image are likely "the result of a huge eruption from our galaxy's supermassive black hole, Sagittarius A*. Millions of years ago that eruption would have punched into the interstellar medium in opposite directions from the supermassive black hole."

[sciencealert.com]
[fermi.gsfc.nasa.gov]
[sarao.ac.za]

@SergeTafCam I see nothing in your comment that offends my sensibilities.

I intend no offense when I say my parallel makes clear that the scientific method requires more than an authority; it requires a testable hypothesis and empirical tests of the hypothesis.

@yvilletom - "the scientific method requires more than an authority; it requires a testable hypothesis and empirical tests of the hypothesis." - I completely agree. In fact, I look forward for other hypotheses that may lead to additional empirical tests that may continue to give us such awesome imagery!!