If the distribution of those nine satellite galaxies across the entire Milky Way is similar to what was found in the footprint captured by the HSC-SSP, the research team calculates that there actually may be closer to 500 satellite galaxies

WTF? I was thinking there were around a dozen or so.

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Ethan Seigel never does "clickbait’ articles. He does 100% educational articles. I actually didn’t know more than half of these things. Who the hell knew that Earth does not have the most water in the solar system?

This blows my mind. It means that Neanderthals could have been building log cabins and their ancestors as well.

“Whatever is causing gravity to work differently at a galaxy scale than at a solar system scale”.

Nothing is. Gravity works the same. We don’t just infer dark matter from gravity fields. We can detect and map the exact locations of dark matter thru gravitational lensing.

https://science.nasa.gov/missions/hubble/hubbles-dark-matter-map/

We can indirectly detect dark matter thru gravitational lensing. That is how NASA created this map showing the actual locations of dark matter in tinted blue.

https://science.nasa.gov/missions/hubble/hubbles-dark-matter-map/

100 ly is not in our local intersteller neighborhood. It is 3x farther than even Arcturus.

100 ly years is actually kind of far. It is farther than most of our named stars. I wouldn’t consider it ‘nearby’.

[More recent work has seen pulsar timing arrays (PTAs) such as NANOGrav successfully identify a specific flavor of gravitational wave known as the stochastic gravitational wave background (SGWB). The SGWB is similar in concept to the cosmic microwave background—a consistent glow from the early universe that astronomers can see as a series of microwaves coming from all directions at once.]

First time I’ve heard of this concept.

Yes. The Cosmic Inflation universe grows exponentially bigger every tiny fraction of a second. And this has been going on for possibly billions or trillions of years or longer. The number of big bangs and pocket universes created by that is mind boggling.

Yeah. Can’t wait for more!

If I understand this correctly:

In the main Cosmic Inflation universe, new space is created exponentially with time.

In roughly 1 out of every 30,000 pieces of “new space”, a big bang occurs from a random quantum fluctuation. The big bangs slow down the inflation expansion in a local area that becomes the equivalent of a ‘pocket universe’.

There was perhaps an infinite number of big bangs (and dead pocket universes) in the past, and there will be an infinite number of big bangs (and new pocket universes) in the future.

Common mistake

No. Our observable universe would be way to small to be connected to the inflationary region. Also, the inflationary universe probably doesn’t have any of our particles so it would not have any light photons. It would probably just look like a mysterious dark area to us.

Will they be similar to our universe or have less energy because inflation continued for longer?

Likely similar to ours. The energy from inflation came from energy that is inherent to the fabric of space - dark energy. So it was not diluted.

But what if we tried to go there anyway? What exists between us?

First there is distance. New space would be created faster than we could travel there. There would likely be other problems. For example, matter would not be stable enough to form atoms and probably wouldn’t exist at all. In the inflation universe, the particles are hypothetical “inflatons”, not the particles we have.

It’s wild to think that light is fast enough to circle the equator 7.5 times per second.

This is 632 megameters (million meters) per hour. The speed of light is 1.080,000 megameters per hour. So this object is traveling 0.58% of light speed.

edit:

0.058% of light speed. thanx modva

[Within the large group of rogue planets are 42 pairs of planets that are gravitationally bound together, something that’s never been observed before. ]

I wonder if that means all 84 planets are bound together.

The whole point of Scrum is to use the retrospective to stop doing what doesn’t work and start doing what does.

That is only something useful if you can use the retrospective to through out Scrum. Otherwise it is yet another Scrum timewaster.

you should keep the rituals that help you work better and discard the rest.

For those using Scrum, that means keep backlog list and discard everything else.