Dark Matter and Dark Energy.

[Mindful]

Only five percent of the universe is visible. What is the rest made up of?

The visible universe—including Earth, the sun, other stars, and galaxies—is made of protons, neutrons, and electrons bundled together into atoms. Perhaps one of the most surprising discoveries of the 20th century was that this ordinary, or baryonic, matter makes up less than 5 percent of the mass of the universe.

The rest of the universe appears to be made of a mysterious, invisible substance called dark matter (25 percent) and a force that repels gravity known as dark energy (70)

Dark Matter and Dark Energy's Role in the Universe

 

[Mindful]

Starting to get my head round this. Or trying to.

Unlocking the Mystery
Scientists have not yet observed dark matter directly. It doesn't interact with baryonic matter and it's completely invisible to light and other forms of electromagnetic radiation, making dark matter impossible to detect with current instruments. But scientists are confident it exists because of the gravitational effects it appears to have on galaxies and galaxy clusters.

For instance, according to standard physics, stars at the edges of a spinning, spiral galaxy should travel much slower than those near the galactic center, where a galaxy's visible matter is concentrated. But observations show that stars orbit at more or less the same speed regardless of where they are in the galactic disk. This puzzling result makes sense if one assumes that the boundary stars are feeling the gravitational effects of an unseen mass—dark matter—in a halo around the galaxy.

 

[night_son]

Only five percent of the universe is visible. What is the rest made up of?

The visible universe—including Earth, the sun, other stars, and galaxies—is made of protons, neutrons, and electrons bundled together into atoms. Perhaps one of the most surprising discoveries of the 20th century was that this ordinary, or baryonic, matter makes up less than 5 percent of the mass of the universe.

The rest of the universe appears to be made of a mysterious, invisible substance called dark matter (25 percent) and a force that repels gravity known as dark energy (70)

Dark Matter and Dark Energy's Role in the Universe

Fascinating. Sometimes one can't help but wonder if our planet is nothing more than a single cell drifting in the bloodstream of a slumbering giant's body which is the cosmos. Not really, but you have to admit, that'd be kind of terrible . . . and awesome.

 

[MarathonMike]

Not only that, the universe itself could be one of an infinite set of universes.
5 Reasons We May Live in a Multiverse

 

[JoeMoma]

Seems like humankind doesn't know shit about the universe(s) yet.

 

[Blues Man]

We seem to be very arrogant in the little knowledge we possess

 

[JoeMoma]

Not only that, the universe itself could be one of an infinite set of universes.
5 Reasons We May Live in a Multiverse

If reason number 4 is true, then I (duplicate me) actually won the billion dollars from the lottery ticket I bought in a universe among the infinite multiverse. In fact practically anything that can be imagined (that does not defy the laws of physics) is true in
some universe of the multiverse because infinity is really big.

 

[MarathonMike]

Think of a worm that lives it's entire life in a green garden. All it knows and can see and feel is plants, soil, air, rain, cold, hot. That is the worm's universe. But the garden is actually just a small plot of land within a bustling city. And the city is just one of many cities in a large state. And the state is just one of many states in a country and so on. The worm is unaware of how different and small it's "universe" really is in the larger context. That isn't a perfect analogy to us and our visible universe, but it's one way to look at it.

 

[JoeMoma]

Think of a worm that lives it's entire life in a green garden. All it knows and can see and feel is plants, soil, air, rain, cold, hot. That is the worm's universe. But the garden is actually just a small plot of land within a bustling city. And the city is just one of many cities in a large state. And the state is just one of many states in a country and so on. The worm is unaware of how different and small it's "universe" really is in the larger context. That isn't a perfect analogy to us and our visible universe, but it's one way to look at it.

The worm probably isn't aware of anything in the same sense that we are aware. And our awareness may be like worms compared to those more advance than we are.

 

[MarathonMike]

Think of a worm that lives it's entire life in a green garden. All it knows and can see and feel is plants, soil, air, rain, cold, hot. That is the worm's universe. But the garden is actually just a small plot of land within a bustling city. And the city is just one of many cities in a large state. And the state is just one of many states in a country and so on. The worm is unaware of how different and small it's "universe" really is in the larger context. That isn't a perfect analogy to us and our visible universe, but it's one way to look at it.

The worm probably isn't aware of anything in the same sense that we are aware. And our awareness may be like worms compared to those more advance than we are.

It's a crude analogy, but like I said it's one way to look at us and our universe.

 

[JoeMoma]

Think of a worm that lives it's entire life in a green garden. All it knows and can see and feel is plants, soil, air, rain, cold, hot. That is the worm's universe. But the garden is actually just a small plot of land within a bustling city. And the city is just one of many cities in a large state. And the state is just one of many states in a country and so on. The worm is unaware of how different and small it's "universe" really is in the larger context. That isn't a perfect analogy to us and our visible universe, but it's one way to look at it.

The worm probably isn't aware of anything in the same sense that we are aware. And our awareness may be like worms compared to those more advance than we are.

It's a crude analogy, but like I said it's one way to look at us and our universe.

Of course an analogy from a worm will be crude.