Skip to comments.Astronomy Picture of the Day - Dark Matter in a Simulated Universe
Posted on 10/25/2020 2:32:54 PM PDT by MtnClimber
Explanation: Is our universe haunted? It might look that way on this dark matter map. The gravity of unseen dark matter is the leading explanation for why galaxies rotate so fast, why galaxies orbit clusters so fast, why gravitational lenses so strongly deflect light, and why visible matter is distributed as it is both in the local universe and on the cosmic microwave background. The featured image from the American Museum of Natural History's Hayden Planetarium previous Space Show Dark Universe highlights one example of how pervasive dark matter might haunt our universe. In this frame from a detailed computer simulation, complex filaments of dark matter, shown in black, are strewn about the universe like spider webs, while the relatively rare clumps of familiar baryonic matter are colored orange. These simulations are good statistical matches to astronomical observations. In what is perhaps a scarier turn of events, dark matter -- although quite strange and in an unknown form -- is no longer thought to be the strangest source of gravity in the universe. That honor now falls to dark energy, a more uniform source of repulsive gravity that seems to now dominate the expansion of the entire universe.
For more detail go to the link and click on the image for a high definition image. You can then zoom by moving the magnifying glass over an area and then clicking. The side bars will move the zoomed area over the photograph.
Pinging the APOD list.
Dark matter - though quite strange
Dont you listen to them, dark matter!
Put ketchup on your corn flakes if thats what you like!
Dont let those nasty astronomers label you!
... uniform source of repulsive gravity...I personally find gravity quite attractive. Anyone who is repulsed by gravity in, indeed, going to find themselves in a Dark Place.
One morning my cat peed in my cornflakes. Is that anything like ketchup? It sure ruined my day, I can tell ya that.
The only dark matter is between their ears.
Black Matter Lives!
Cosmological thinking seems to be moving steadily towards Electric Universe theory. This artist’s rendering is similar to how I would imagine interstellar plasma tendrils to look (if they were visible).
Appropriate image for Halloween.
Pic reminds me of a gigantic brain.
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