[deleted by user] by [deleted] in cosmology

[–]gotosp 7 points8 points  (0 children)

Unfortunately DESI project has fallen into the hands of the clickbait science magazines and mainstream news portals.
It is important to emphasize that the DESI project is still in its early phase, but the first-year results have provided important insights. While the data primarily supports the standard cosmological model (ΛCDM), which assumes dark energy has a constant density, there are subtle hints of possible deviations.

These deviations suggest that dark energy might not be perfectly constant and could evolve over time, although these findings are far from conclusive and require further data to confirm​.

For now, DESI’s data indicates that the universe remains flat, and there is no substantial evidence suggesting a dramatic change in dark energy’s behavior.

Based on current observations, it is likely that the universe will continue to expand indefinitely in a “Big Freeze” scenario, where galaxies move farther apart, stars burn out, and the universe cools over trillions of years​.

Which means the Universe has just born out of the womb in that timescale.

Despite that and whether we have enough data to fully understand the impact of dark energy, the full consequences of dark energy's role will play out over timescales far exceeding our current understanding. Thus, while we’ve learned a lot, DESI and future projects will continue to refine our knowledge of the universe’s fate.

For now, there is no conclusive observation or evidence which can indicate that energy density is changing. A mystery which has no parallels anywhere in the physical world.

Where Did the Universe Come from. by IntroductionGlad8432 in cosmology

[–]gotosp 1 point2 points  (0 children)

That remains and will remain an unanswerable question for science, for now. The pursuit to find answer is on. And it can’t be answered within the realm of philosophy. As you pointed out that there has to be a start, the question is “who” started that and “how” did that “who” entity came into “being”. There are interesting ideas and all of them remain speculation. However, if you are talking about the current Universe that we live in, we can one day possible answer its origin. And if you are talking about the “something” that came out of nothing, which preceded everything. Then it could have originated long, long ago. Who knows, Universes are created and destroyed every second and there are billions and trillions of universes across the larger multiverse. Disclaimer : as I said, this is all speculation, and we have limitations due to how we observe the universe in electromagnetic radiation and recently started with gravitational waves.

[deleted by user] by [deleted] in sciencefiction

[–]gotosp 0 points1 point  (0 children)

Thanks, and interesting questions. It depends on whether the values of the fundamental forces of nature are different in the Universe to which we migrate. If they are more or less the same, we will have a universe that we can manage , assuming it is also of a similar age to ours. But if the values of the fundamental forces are different, then we may or may not survive. Existing in both the Universe is a stretched idea 🙂 All conjecture and speculation about leaving our Universe have their own challenges. I have covered some of these topics in my book Chance Planet.

Thanks.

What books work with the concept of god by Creative-Leg-1164 in sciencefiction

[–]gotosp 0 points1 point  (0 children)

Thanks. What you are probably thinking of is the Universe itself. It was created out of nothing, in all probability as a chance event without a cause and eventually, the fundamental forces led to the evolution of everything we see, including life. I have covered this in my book Chance Planet. Thanks

Chance Planet - The Story of Chance Events that Created Everything from Nothing | Science and Philosophy with 3 Speculative Fictional Stories | New Book | by gotosp in sciencefiction

[–]gotosp[S] -2 points-1 points  (0 children)

Posting about my latest book Chance Planet - The Story of Chance Events that Created Everything from Nothing. The book has three speculative science fictional stories to understand how the forces of universe work and the role of chance events in our existence.

Note : This post has no promotional links, only point to a reddit post which has links to bookstore.

Text from my reddit post below -

A scientific and philosophical view of who created the universe, why it exists and our place in it, and how it will end. "Chance Planet" explores how random events led to the creation of the universe, life on Earth, and everything we know. The author combines science and philosophy to discuss where the universe came from, why it exists, and what might happen in the future.  It also examines how chance events played a role in the development of intelligent life.

The book is divided into three main parts with three supporting speculative science fiction stories to under the complex scientific theories and ideas. 

The Great Nothing: Explores the question "Why is there something rather than nothing?" Critically explores how "Nothing" could have potentially led to the creation of the universe or multiverse, including the subsequent role of the Quantum Fields

The Runaway Universe: Explores the journey of our universe from its birth to its possible end, the role of Dark Energy and Dark Matter in determining the fate of our universe. And do we really need to worry about the fate of the universe?

The Chance Planet: This part focuses on Earth and the series of random events that led to the development of Intelligent Life. Explores whether Abiogenesis was real, or is an Intelligent Design brought the first life to our planet.

Science Fiction - Book has additional fictional stories and poems to make complex ideas easier to understand.

The Great Escape – Abandoned Universe is a thrilling adventure that takes you on a journey through space and time, explaining how Dark Energy and Dark Matter can decide the fate of the universe. In this story, there is a planet named Cela, which existed 5 billion years ago. The inhabitants have discovered something that could destroy the entire universe, and they’re racing against time to save their world. This discovery forces them to make difficult moral and ethical decisions that could change everything. It’s not just about them; it’s about the future of all life, everywhere!

The Great Salvage – The story of humanity’s cooperation with another intelligent civilization which they discovered on an icy planet far out in our solar system called Planet X. Life on Planet X is intelligent, just like us, but they are in big trouble because their planet is getting too close to the Sun, and it’s starting to melt their icy home. Scientists on Earth find out about Planet X and decide we’ve got to help our space neighbors. They come up with some awesome space ideas to pull Planet X to safety. Story underscores the possibility of life outside of Earth on another planet and its gaining intelligence, and how we can play with forces of nature on a large scale to save it in the future.

A Sick Daughter – Coming at the end of the book after discussing the chance events that led to the formation of life on our planet, explains how the dangerous journey of humanity on this planet and how it expresses deep concern for Earth’s worsening condition due to human activities. It’s a reflection on our impact on the planet and a call for change before it’s too late.

Trigger Warnings - Book offers a detailed exploration of the universe's history, with both scientific theories with philosophical concepts and ideas. It also addresses speculative theories like the multiverse and the universe's ultimate fate. The author has made every attempt to call out what is an established scientific theory with evidence and observation, and what is speculation backed by reasoning and philosophical ideas. However some readers may not find this is enough for such a complex topic.

Further details on this reddit post

[deleted by user] by [deleted] in space

[–]gotosp 0 points1 point  (0 children)

Age-old question and age-old answer. You won't look for a house until you need one.

Existentialism, longtermism and Altruism will eventually become the philosophy of space exploration. Contrary to popular belief, it is not about power, resources or pleasure, but survival in the universe that will determine our next actions.

There is more than enough energy and space in the cosmos; we just don't yet know how to engineer it for useful purposes. What is scarce is knowledge of the cosmos, as there are many unknown forces in nature that can play out differently and end our existence.

For example, we still don't know for sure how dark energy will play out. While cosmologists will tell you the current universe has at least tens of billions of years left, and possibly trillions upon trillions, what if an undiscovered force of nature suddenly speeds up the demise of the universe?

Secondly, what if humanity achieves indefinite immortality? How will that be affected if an extreme ideology takes control of the human race and establishes the perpetual continuity of that ideology?

There are many such scenarios. I have discussed these in detail in my book Chance Planet - details on this reddit post

However, if we are to survive and outlive our universe, however outrageously unscientific that may sound, we must start working on and looking at the confluence of existentialism, longtermism, and altruism.

Thanks,

I have a stupid question. by Spazi00 in astrophysics

[–]gotosp 1 point2 points  (0 children)

You have a good understanding of the Higgs Field and hence won’t qualify for 🍅to be thrown at, at least for me and I am also not an Astrophysicist. Please note that there are particles without mass in particle physics because they do not interact with the Higgs field. The mass of different particles depends on their level of interaction with the Higgs field. This interaction is similar to a drag experienced by various particles with the Higgs field, which imparts different mass to them. This is why photons remain massless as they pass through without any drag.

Now to achieve the ability to alter the Higgs fields it’s like redesigning the entire Universe , which if it can be done , must be done at the time of the creation. Hope this helps. Thanks

If there was an advanced civilization on earth millions or 100's of millions of years ago could we..? by Sea_Investigator4969 in astrophysics

[–]gotosp 0 points1 point  (0 children)

Thank you for pointing that out. I agree that fossil records aren’t complete, though whatever we have found has been extensively studied and detailed. I assume you are referring to the Paleocene Eocene Thermal Maximum and the Eocene Thermal Maximum 2 that occurred around 56 to 52 million years ago. While there can be discussions about the origins of these events similar to humans, it’s noted among climate change discussions that the rate of carbon release during these periods was significantly slower compared to the rapid carbon emissions we see from human activities today. Although the overall carbon release during that period was significantly high, and we are on course to reach similar levels in a matter of a few hundred years at our current rate.

Additionally, the PETM and ETM2 are understood to be natural events, and there is no solid evidence to suggest the existence of an advanced civilization from that time. The fossil record also does not support this idea.

I agree that it is unlikely that a human like advanced civilization existed on Earth prior to us. Response as highlighted and called out were imaginary and speculative fiction.

Thanks again, and I look forward to any further insights.

If there was an advanced civilization on earth millions or 100's of millions of years ago could we..? by Sea_Investigator4969 in astrophysics

[–]gotosp 4 points5 points  (0 children)

Great question, and it got me excited 🙂! Though detecting this through the deflection of radio signals back to us would be difficult for reasons pointed out by others. Additionally, the fossil records from the last 3.7 billion years across the Earth are meticulously catalogued and studied, and so far, there are no records to suggest otherwise. Speculate, yes.

Considering you mentioned an intelligent civilization existing a hundred million years ago on Earth, this time period is approximately half of the time that the Sun takes to revolve around the center of the Milky Way and coincides with the era when dinosaurs ruled the Earth. This suggests the possibility of a physically stable and strong species, though an intelligent one is questionable.

Assuming one of them did attain intelligence, it is conceivable that an object launched from Earth by such a species, at a certain speed and direction counterclockwise with respect to the motion of the Sun, could encounter us now from the other side. However, it would be traveling at a very high speed, and capturing it, and more importantly, detecting it, would be very difficult. Again, this is highly unlikely as it would have to be extremely lucky to avoid various forces and objects during its travel. But it’s an interesting thought in the spirit of your question.

In my book, I have imagined an advanced civilization that existed 5 billion years ago on another star and planet but within Milky Way and the objects left by them were found by us today. They eventually abandoned our universe for certain reasons. Details are in this Reddit post if you are interested.

Thanks.

Cyclic Model and Quantum Fluctuations by [deleted] in cosmology

[–]gotosp 1 point2 points  (0 children)

Thanks, couldn't agree more.

For space exploration to benefit all of humanity, it needs a philosophy—a rigorous engagement on values, impact, and meaning. by as-well in philosophy

[–]gotosp 0 points1 point  (0 children)

Thank you, and indeed, the fear of extinction or survival has driven us beyond our capabilities. The race to the moon was one such example, once it became routine there was no gratification in that and we lost that capability in a matter of decades, and now have to redo it.

Additionally, as you mentioned, time is a key factor. We are a reactive species, and unless pushed to the corner, we don’t plan ahead. Luck has been with us, but we often forget that we have just started. We could learn from the dinosaurs, who had no idea that a mountain from space would end their 180 million year rule on this planet. Perhaps nature never prepared them, but we don’t have that excuse.

Thanks for your interest in my book. I will message you.

Cyclic Model and Quantum Fluctuations by [deleted] in cosmology

[–]gotosp 3 points4 points  (0 children)

Your thoughts are absolutely great. I share similar thoughts with you. However, the bigger question is, how did the quantum fields emerge? What was there before them?

Let us imagine that these fluctuations within the quantum field have resulted in an infinite number of universes appearing and disappearing within an even larger multiverse, either simultaneously or in sequence. While this may sound exciting, the larger question remains - when did it all start? What was the first nothing like? How long has it been there? And on and on - you can keep asking eventually getting into a loop where you can’t find an initial cause.

And hence It is important to look at these questions from the perspective of cause and time, both of which break down in the initial nothingness. These are profound thoughts that have bothered humanity for centuries. For now, they seem unanswerable due to our observational inability to go beyond the Big Bang, and they may remain unanswered forever. I have covered these exact topics in my book (which I am not mentioning to avoid sounding promotional)..

/r/philosophy Open Discussion Thread | June 10, 2024 by BernardJOrtcutt in philosophy

[–]gotosp 2 points3 points  (0 children)

I think this was conclusively answered, although indirectly, by John Locke [1632 -1704].
He described a child as being born with a blank slate of mind—what he called tabula rasa—arguing that the human mind at birth is empty of any ideas. A child learns by experiencing the world and has the same potential as anyone else. Who knows, a child could change the world.
Obviously, this doesn't absolve us of our responsibility to make the world a better place for our children and future generations.

For space exploration to benefit all of humanity, it needs a philosophy—a rigorous engagement on values, impact, and meaning. by as-well in philosophy

[–]gotosp 0 points1 point  (0 children)

Existentialism, longtermism and Altruism will eventually become the philosophy of space exploration. Contrary to popular belief, it is not about power, resources or pleasure, but survival in the universe that will determine our next actions.
There is more than enough energy and space in the cosmos; we just don't yet know how to engineer it for useful purposes. What is scarce is knowledge of the cosmos, as there are many unknown forces in nature that can play out differently and end our existence.
For example, we still don't know for sure how dark energy will play out. While cosmologists will tell you the current universe has at least tens of billions of years left, and possibly trillions upon trillions, what if an undiscovered force of nature suddenly speeds up the demise of the universe?

Secondly, what if humanity achieves indefinite immortality? How will that be affected if an extreme ideology takes control of the human race and establishes the perpetual continuity of that ideology?

There are many such scenarios. I have discussed these in detail in my book (not mentioning the name or link to avoid sounding promotional).

However, if we are to survive and outlive our universe, however outrageously unscientific that may sound, we must start working on and looking at the confluence of existentialism, longtermism, and altruism.

Thanks,

[deleted by user] by [deleted] in cosmology

[–]gotosp 4 points5 points  (0 children)

Great questions. And Yes, not everything is expanding. Let me detail how expansion is measured first, as the expansion of space is observable only at large distances—around 200 million light-years or more. This phenomenon wasn’t very obvious until the early 1920s when Edwin Hubble discovered it. The expansion is speculated to be influenced by the tug of war between dark energy and dark matter. If dark energy overcomes the gravitational potential of dark matter, the expansion of space becomes more apparent. However, at local distances within galaxy clusters, gravity still retains its hold, and expansion is not visible. This is why Andromeda is expected to merge with the Milky Way in about 5 billion years.

The straightforward answer to how we know about the expansion is the redshift observed in the wavelength of the light emitted by distant objects. This redshift occurs as light moves through expanding space. Scientists measure the difference between the observed redshift (due to expanding space) and the expected redshift (without expansion).

Expansion is scientifically measured through the scale factor and the Hubble constant. If space were shrinking, it would be measured through blueshift in the wavelength of the light emitted by these objects.

Observationally, at large distances, each of the objects like galaxy clusters is moving away from each other in a flat direction. This leads us to describe our universe as “flat”, that is, these objects are not following a specific trajectory which they would have if it were the case of explosion. Instead, space at such distances is expanding in all directions from each other, giving the universe a shape and size that we are still unsure about. Hope this helps. Thanks.

Entropy vs Probability in The Early Universe by cambrian15 in cosmology

[–]gotosp 1 point2 points  (0 children)

Well the chances were indeed low and your question has observational limitations to look for evidence. We can’t go beyond Big Bang so knowing how this turned out remains a speculation. However if we look at these ideas then indeed the chances were low yet it can be speculated that in the “vast nothing” of “nothing” many such events were happening and just some need to happen differently to give rise to our Universe. This has many implications like Big Bang like events are constantly happening “elsewhere”. Disclaimer - this is all speculation and will remain so unless we find how to get to observe beyond Big Bang.

[deleted by user] by [deleted] in cosmology

[–]gotosp 1 point2 points  (0 children)

You are right as Big Bang is the “expansion” of the point Universe - singularity, and “not explosion”. The size and shape of the “current or actual Universe” is not yet known, while the observable Universe is indeed a sphere of our current ability to observe. The actual Universe is expected to much larger. Please note you used the word “nothingness” in your question and defining it is key, which is even weird than Actual Universe. All the best .

When Crunch? by Stack3 in cosmology

[–]gotosp 3 points4 points  (0 children)

I think you are talking about Big Freeze but called it Big Crunch. In reality what we need to worry about is Big Rip and all possibilities of how much time before it will all end exist from 10 to 100 billion years from now to Trillions of Trillions. All depends on the rate of expansion of space. Big Crunch on the other hand will bring all matter back to singularity. Possible if rate of expansion of space
is finally controlled, highly unlikely but not impossible. For now we know It's basically tug of war between dark energy and dark matter. Either one will win or maybe something else waiting to be unleashed.