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Sky Candy in the Clouds

NASA/JPL-Caltech/Univ. of Arizona

Want to build a city on the Moon? 

Just to start up here, I want to include Elon, making clear what SpaceX is actually for.

Let's start with a hat trick.

Astronomy Picture of the Day is always good.

Spiral galaxies always fascinate me. They look like the stars going down a drain into the black hole in the center, but that's an illusion — those stars are simply orbiting the galactic core. The bright arms are streams of new stars being created,

Oddly, they tend to all orbit in the same direction, and the axes of rotation tend to point in the same direction. One explanation of this is that our universe is actually inside a black hole in our parent universe.

This is called Schwarzschild cosmology.

The notion that our universe exists inside a black hole—often called black hole cosmology or Schwarzschild cosmology—proposes that what we perceive as the Big Bang and the entire observable cosmos is actually the interior of a black hole that formed in a larger “parent” universe. In standard general relativity, a black hole ends in a singularity, but models incorporating spacetime torsion (such as Einstein-Cartan gravity, developed by physicist Nikodem Popławski) predict that collapsing matter bounces instead of forming a singularity, birthing a new, expanding baby universe on the other side of the event horizon. Every black hole in our universe could therefore spawn its own child universe, creating a multiverse of nested realities. Our cosmic horizon matches the black hole’s event horizon, and the Big Bang corresponds to this “white hole” birth event. Because nearly all astrophysical black holes rotate (they are Kerr black holes), the parent black hole would impart overall angular momentum to its child universe, giving our cosmos a subtle global spin and a preferred rotational axis.

Recent JWST observations have been interpreted as supporting evidence for this rotating-universe scenario. In a 2025 analysis of the telescope’s Advanced Deep Extragalactic Survey (JADES), astronomer Lior Shamir examined hundreds of early galaxies and found a striking asymmetry: roughly two-thirds rotate clockwise (the same direction as the Milky Way), while only one-third spin counterclockwise—far from the 50-50 random split expected in an isotropic cosmos. Popławski’s earlier theoretical work predicts exactly this effect: in a universe born inside a rotating black hole, the inherited spin axis becomes a preferred direction, and galaxies align their own angular momentum with it to minimize energy, producing the observed clockwise-counterclockwise imbalance. While alternative explanations exist, the finding has revived interest in the idea that our universe was “born rotating” inside a spinning parent black hole.

Making babies. Baby stars, at least.

Comets are cool. Have you ever seen one in real life? I saw Ikeya-Seki in 1965.

And a little OG Lovecraft.

More clouds.

And more galaxies. To my eye, they look like they rotate in opposite directions, but Grok assures me that's an illusion.

And some space history.

I remember this quite vividly and listening to Jules Bergman describing what happened and talking about it until they landed in the Pacific.

So that's it for this week. Comment, share, and come back next week for more Sky Candy.

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