eCosmology

cosmology? the metric fluctuates in the infinitely small, then why its principal characteristic, its signature, should remain fixed?

In what ways does scientific cosmology contradict the teaching of cosmology in Islam? I need to know the asnwer to this as I have to hand in my My Comunity coursework in six days time, and I can't hand it in without this question answered. Also, I need to know: In what ways does scientific cosmology contradict the teaching of cosmology in Christianity?

In what ways does scientific cosmology contradict the teaching of cosmology in Christianity? I need to know the answer to this question 'cause I have My Community coursework due in a week today, and I can't find this answer anywhere. also, I need to know In what ways does the scientific cosmology support the cosmology of Islam?

What is the difference between astronomy and cosmology? What is the difference between astronomy and cosmology? Are they the same thing? Also what is astrophysics?

What classes should i take for Astrophysics and Physical Cosmology? Im in high school right now and i want to pursue a career involving Astrophysics and Physical Cosmology. What would some good high school classes to take be for these? To follow through, what would some good college courses to take be? Many thanks.

What is the best college that i can major in cosmology/astronomy? Okay, so i'm really interested in cosmology and astronomy. What is the best college/ university* that majors in these two subjects?

Are cyclic theory of cosmology gaining more support? I was reading about the cyclic theory of cosmology. Theory that big bangs are produced every trillion years or so by the collision of "branes". Sounds plausible, but is this gaining any acceptance among the main cosmologists?

Where can I go to college for Extragalactic Astronomy and Cosmology? I am really interested in getting into the field of Extragalactic Astronomy and Cosmology. Suggest a school in any country in the world, one not it the united states would actually be better, please. Thanks for the help!

Why was Nicolas Cusa was not condemed for his belief in a radical Neoplatonic cosmology? In the book the Copernican revolution Kuhn says that “Nicholas of Cusa had propounded a radical Neoplatonic cosmology and had not even bothered about the earth as a moving star, like the sun and the other stars, and though his works were widely read and had great influence, he was not condemned or even criticized by his church”. Why was it that this radical theory not condemned by the church and the Copernican theory was? Was it the content of the theory or were the times just different, what makes theories in general dangerous to the church?

Need help with Cosmology and How it impacts the world Globally? Hi, I am having trouble writing a this paper about Cosmology (study of the universe and how humanity is involved with the universe) I understand most of the minor concepts and such, but i am suppose to relate this topic on a Global Level...like how it affects various nations...most other topics people are writing about in my class involve economics globally...so i am a little worried about my topic and how to relate it globally to my professors liking...Help me out guys with any ideas!

How many climate change deniers also deny biology, astronomy, cosmology, etc? I'd like to just get an idea - how many of those denying anthropogenic climate change tend to reject science generally? That is to say, how many denialists also reject biological evolution and the Big Bang model of cosmology, and by extension, also implicitly reject most if not all of the findings of: Geology Chemistry Physics Archaeology Astronomy Cosmology Biology Paleontology Et cetera Well?

Where can I ask advanced cosmology questions? I have had advanced level astronomy and cosmology, read the popular magazines on the topic but have not found a place to ask questions that seem above YA level.

What are the objections to plasma cosmology? Many remarkably intelligent people subscribe to the idea that the cosmos is driven primarily by electricity, not gravity. If you've never heard of this, please look at some of these resources before trying to answer this question: http://plasmascience.net/tpu/TheUniverse.html http://www.holoscience.com/ http://members.cox.net/dascott3/index.htm "The Big Ban Never Happened" by Eric Lerner There are many apparently startling results that come out of this perspective. First, it has produced cosmological predictions vastly more accurate than those of the classical model (cf. http://www.thunderbolts.info/tpod/2005/arch05/050704predictions.htm). Second, it offers explanations of phenomena still "mysterious" to modern science (e.g. the temperature of the sun's corona). However, whenever I hear scientists not of this camp comment on plasma cosmology, they just reject it out-of-hand with little more explanation than "It's just wrong." Would someone please explain why? Sorry, one link doesn't work. For a successful plasma-based prediction, look up references to "Deep Impact" for July 4th, 2005 in the archives of Thunderbolts Picture of the Day: http://www.thunderbolts.info/tpod/00archive.htm This should be the correct link: http://www.thunderbolts.info/tpod/2005/arch05/050704predictions.htm First, if you're going to tell me that plasma cosmology is objectionable "because it's wrong," don't bother. I want to know WHY it's considered wrong. Calling it "pseudoscience" doesn't get us anywhere unless you care to define what that means and why it's justifiable to call plasma cosmology pseudoscientific. Second, please don't appeal to the "You know too little to understand" argument. I have no trouble understanding Penrose's "The Road to Reality." If you think I'm missing something, please explain. Third, thanks to the third respondant for posting the Kronia video. I didn't know that had been uploaded! I've met those people and I respect them. However, some of their science is off. The whole point of relativity was to solve a problem in electromagnetism. However, this doesn't change the fact that plasma cosmology (a) predicts and (b) explains phenomena that standard cosmology apparently does not. I'd like to know why this is considered unworthy of comment.

I want to give online exam on cosmology and get certificate at free. What to do?-? I want to give online exam on cosmology and get a certificate. For that, if needed, I am ready to participate in a small course online for free. What to do?-

How does quantum gravity explain cosmology events prior to “10[-43]” seconds after the start of the universe? Before answering remember - Biological information is not encoded in the laws of physics and chemistry … (and it) cannot come into existence spontaneously. … There is no known law of physics able to create information from nothing.’ To Anki Rocks -Thanks for the background on quantum physics..However your statement does nothing to answer my above question, because only an intelligence/Creator can provide the information needed prior to "10[-43]".. The biggest mystery of all is the one cited by Stephen Hawking in A Brief History of Time: Why is there something rather than nothing? More specifically, what triggered the Big Bang, and why did the universe take this particular form rather than some other form that might not have allowed our existence? Attempts to solve these mysteries often take the form of what I call ironic science—unconfirmable speculation more akin to philosophy or literature than genuine science. Another example of ironic science is string theory,but the theory comes in so many versions that it predicts virtually everything—and hence nothing at all. Critics call this the "Alice's restaurant problem," a reference to a folk song with the refrain,"You can get anything you want at Alice's restaurant! To PhysicsD..This is the correct format for my question which is asked from a science-point-of-view however because as you correctly stated "Nothing" existed prior to "10^-43". So the correct answer to ny question is "Quantum cosmology cannot explain the event prior to "10^-43" because the probability of something's coming out of nothing is incoherent. To Gengi M. Wrong! - Scientists have never observed abiogenesis (i.e. the creation of life from non-life) happening in nature, nor have they been able to create any lifeforms through controlled (i.e. manmade) experiments. Abiogenesis seems out of the realm of empirical science. Furthermore, the extreme complexity of all lifeforms seems to point in the direction of an outside Intelligence..Now your question Where did God come from - 1-Everything WHICH HAS A BEGINNING has a "cause" 2 - The Law of Thermodynamics prove beyond any doubt that the universe has a beginning 3- Therefore the universe has a "Cause". Einstein's general relativity showed that TIME is linked to matter & space. So TIME itself begun along with matter & space at the start of the universe. Since God by definition created the universe he also "Created" TIME! and is NOT limited by the time dimension HE CREATED so he has NO BEGINNING in time. Therefore he does not have or need to have a "cause"...

What is the difference between Astronomy and Cosmology and Astrophysics? do cosmologists study the planets,stars etc. and phenomenon like gravitational force and others what does an astronomer study and astrophysics deals with what?

what are the good universities for studying cosmology and astrophysics? We twins are in 1st year of a high school. We have pre-engineering and a wast knowledge of space. We have studied many books on space and many articles and watched many videos. We always go to the library just to study about space. Further we want to study astronomy. We are confused for choosing a right university. Can you help us?

Does quantum loop cosmology entail the apparent lifetime of protons is shorter than generally thought? Can this be tested? What i mean is, if the Universe is oscillating in that manner, does that suggest that protons are already quite old, or does a new set of protons get generated with each round? How would you measure the lifetime of a proton empirically anyway?

What's the difference between MULTIVERSE theory in cosmology and MODAL REALISM in metaphysics? People insists they are different, but I don't really see why they can't be reduced to one another.

What is the difference between cosmology and astronomy? Or are the two terms used interchangeably?

How can I get a cosmology student to do my nails? I can't afford to get a manicure cause they've too expensive.

What is the average cost of cosmology school? I live in Southern California & plan on making meetings with different beauty school administrators soon, but I am just trying to get an idea because I have gotten a lot of different answers from friends.

What is the relationship between Hindu cosmology and the String theory? Om is a the vibration for the creation of the universe, and strings are vibrations also, which created the universe? Any other connections?

what is the profession of someone who has to do with Cosmology? im not sure if i phrased that right, but i want to know what jobs has to do with Cosmology.

How do you pronounce the nine worlds of Norse cosmology? I was doing raearch into the nine worlds and I am very interested by it. The only problem is I have no idea how to pronounce them! Can anybody help me please? (pronunciation of other words, such as yggdrasill would help as well)

Where are we today in physics and cosmology? Im just wondering where we are today in physics and cosmology in particular in understanding the 'big bang theory'. Is 'M theory' still a big part of scientific debate at the moment or are there new more advanced theorys? Or is the scientific community really just looking to CERN and the LHC now for answers? If anyone has any good links to info I would appreciate them. Thanks

What is the difference between Cosmology and Theodicy? It was a question for my philosophy exam I did not understand.

Are there any books about theoretical cosmology and quantum gravity that moderately easy to follow? Where can I find them.

Why do Christians assume that all atheists have a degree in physical cosmology and evolutionary biology? Christians must assume this since they keep asking atheists to explain all the intricacies about evolution and the Big Bang. Wouldn't their questions be better received if they asked this in the science section where actual specialists can lay it all out of them? Or are they afraid?

What were Charles Darwin's views on Cosmology and the origin of the universe? Did he believe in a static, eternally existent universe, or a finitely existent universe with a definite beginning?

What questions are unknown in physics, chemistry, astrophysics, and cosmology ? Wondering if anyone has any relatively hard to find, unknown questions in the 4 fields. I just want something I could look into to see why we don't know it. And do a thought experiment or two.

Is there any sci-fi book which deals with cosmology or anything related with universe? It should not have aliens or planets which are writer's invention.It would be yellower than gold if it's written in the last 10 years!

How do you distinguish Astronomy, Cosmology, and Astrophysics? And what are their links with Physics? What are the difference between the three? And how much does each of them related to Physics?

Why does the anthropic philosophy of cosmology disturb physicists? Why is it that the anthropic view of our cosmos are so disturbing to some physicists? I think we are where we are and all the constants in nature are the way they are because we live in this particular bubble of the cosmos that makes life and humans possible. No need to get religion into it. Things are the way it is because we evolved in the universe that just happen to make life possible. Why is that so hard to "buy"?

How is cosmology different from astronomy ? Is it only b/c it has philosophical elements in it ?

Is there an informal course available in Cosmology A to Z that I can take at my own speed? I have a degree in Business Mgmt, minor Psyche, and have had virtually no physics in school. Highest math is calculus, which I struggled through. Thanx!

What mathematics should I know to study cosmology? I listened to a CalTech presentation by Kip Thorne, and he referred to a ton of strange math such as tensor calculus. I want to know what kind of math is necessary to understand technical papers about relativity, galaxy formation, and the birth and death of the universe. Thanks! When I try to read academic paper regarding cosmology, I barely get past the abstract before being overwhelmed by strange greek symbols with no accompanying explanation. What kind of math is this? What branches of mathematics are necessary to understand these papers?

How did New Zealander Beatrice Tinsley contribute to cosmology? Hi, I'm doing (yet another) school project on Beatrice Tinsley and would appreciate some info on the above question. Also, what pressures contributed to her young death? Thanx

why is an organic cosmology compatible with a pantheistic cosmology, and the ontological explanations of human existence? how do they differ from mechanical views?

What are some great physics/cosmology/astronomy books for me to read? I'm not looking for anything dumbed down, just something short of a thesis because I only have basic physics knowledge. Some of the authors I love are: Richard Feynman Stephen Hawking Carl Sagan Brian Greene Leonard Susskind So, are there any other than these guys? Or just anything really interesting that has to do with vaguely physics/space-related stuff? Maybe a little bit higher level than the above authors' books for the general public?

How would you describe physical cosmology into 3-4 sentences? Or more if it pleases you.

Would you give me your opinion on my cosmology? Would you give me your opinion on my cosmology? Everything comes from death, suffering, and destruction, reaches its height in the radiance of goodness, and eventually ends with death, suffering, and destruction. Thanks everyone for your visit...

Why were the observations made by the COBE satellite so important to cosmology?

Can you describe the interconnection between the cosmology and the philosophical realms of the Mesoamerican ci Can you describe the interconnection between the cosmology and the philosophical realms of the Mesoamerican civilizations

What kind of jobs can someone with a degree is Cosmology get? i dont want to be a teacher, college professor or work on wall street.

What are your thoughts on Loop quantum Cosmology? Not looking for an explanation of it, just your opinion.

Can you suggest some good books to start learning physical cosmology? I'm talking beyond Hawking, here. I'd like to study mathematical physics and really understand the complex technical nuances of the theories of the structure of the universe. Where should I begin? I'm very widely-read on astronomy and have done graduate coursework in theoretical statistics, which is not the same as mechanical statistics, obviously. I was really into cosmology as a kid until my parents talked me out of it. I remember arguing with family members at dinner parties about superstring theory.

Do or did U know mereology is a branch of metaphysics which,like the branches ofontology & cosmology R branch? -es of philosophy? see: http://plato.stanford.edu/entries/mereology/ This is a bona fide philosphy Q!

Describe how the Big Bang cosmology accounts for the presence of hydrogen and helium and tiny amounts of? deuterium, lithium, and beryllium in the universe. How and when did it all form? What happened to all the anti-particles also created?

If the Creator was not perfect as in some 1st cen Christian cosmology then does a flawed creation makes sense? If the Creator was the offspring of Sophia or was in one of the other proposed cosmologies where He is not the only God then the flaws in creation may make more sense and the Creators character as well becomes more consistent with His behaviors in the Bible. Does this support the many excluded texts?

How is differentiation used in cosmology? Specifically, how does it explain the process and why should it be used? I'm writing a research paper for calculus and I'm having a hard time with this. Thanks

What's are the differences between cosmology and cosmogony? Their argument seems to be the same, so what's their play one against the other...

If I have an interest in astronomy/cosmology and theoretical physics what major should I take in college? & what are some realistic career options?

What are the basic observations about the universe that any theory of cosmology must explain?

Do you see any similarities between hindu cosmology and hegel philosophy? If so, please tell me where can I expand on this. Thanks!

What are some of the impact cosmology has had upon society? i dunno how will it effect our society so need yahoo people to help me out

I have read about the Electric Universe Cosmology and it is explains the U evolution differently.? Is it a valid theory, and can someone elaborate on the basic tenants?

What are the differences between Platonic and Aristotelian cosmology?

Any good recently published cosmology or quantum physics book? I'm an amateur cosmologist/quantum physics enthusiast. Are there any good recent books on either subjects that's "readable" by a non-mathmatician? I have read books such as Fabrics of the Cosmos, Parallel Worlds, Infinite Universe, etc. Thanks

What kind of music will get you thinking about the Universe and the physical cosmology of it? lol... I really want something dramatic and mysterious. I guess piano or maybe even the harp would be best. Anything. No lyrics though, maybe some lady humming or saying something silently. No guy. I mean, a guy could be playing the instrument...that's fine. Help. Thanks. Something sad too...

What is the difference between Cosmology and Epistemology?

In what ways did the astronomical observations of Galileo support a helicentric cosmology?

How did the invention of the telescope affect cosmology?

Can anyone recommend a good book, or on-line source, to bring me up to date on Cosmology? The last thing I read was A Brief History Of Time by Prof. Stephen Hawking. But that was years ago! I am particularly interested in this "dark energy" thing people are talking about! Thanks in anticipation... The idea of "dark matter" has been around for years. I am familiar with that! "Dark energy" is supposed to be responsible for the increasing rate of expansion of the universe and is a recent development! I will read Richard Dawkins book. It's not what I am looking for here, but I am sure that it is my kind of book! Thanks.

What are basic observations about the universe that any theory of cosmology must explain?

What do you think of Hindu Cosmology as per Carl Sagan? "As far as I know, India is the only ancient religious tradition on the Earth which talks about the right time scale. In the West, people have the sense that what is natural is for the universe to be a few thousand years old, and that it is billions of years is mind-reeling, and no one can understand it. The Hindu concept is very clear. Here is a great world culture which has always talked about billions of years." "The Hindu religion is the only one of the world's great faiths dedicated to the idea that the Cosmos itself undergoes an immense, indeed an infinite, number of deaths and rebirths. It is the only religion in which the time scales correspond, to those of modern scientific cosmology. Its cycles run from our ordinary day and night to a day and night of Brahma, 8.64 billion years long. Longer than the age of the Earth or the Sun and about half the time since the Big Bang. And there are much longer time scales still." ~ Carl Sagan

What is the difference between hot dark matter and cold dark matter? What difference does it make to cosmology?

What are main implications of recently confirmed non-zero neutrino mass for particle physics/cosmology? Supplementaries 1. What adjustment to mass of dark matter needs to be made to compensate for finite neutrino mass? 2. How reliable is the recently published neutrino data? Thanks Terry - curious

How has cosmology changed during the Renaissance? (PLZ answer ASAP)? I need info on how the cosmology changed.(like how were the beliefs changed)

What is the connection between Babylonian cosmology and the Old Testament?

What should I give to a 13 year old boy who loves politics, cosmology, etc.? He is interested in politics, science, space, and learning, but what "modern day" type gift should I give him?

What effect on Cosmology would the idea that radiation could be shifted to the red by other means than Doppler Radiation from very distant objects travels through vast distances of varying types of energy fields. Is it not at least possible that this could lead to the so-called red shift in additiopn to any effect of Doppler?

What does the new cosmology have to do with faith and an understanding of God? Stephen Hawking asks us to think about human survival - what does this have to do with his understanding of cosmology? Can our understanding of the universe inform our understanding of God and vice versa?

I love astronomy astrophysics and cosmology but I also want to live a comfortable life here on earth. Careers? What are some careers and majors I can pursue (I'm a senior in high school) that will help me do what I love and help me be financially set?

Is it possible to explain brane cosmology to the layman without maths or jargon or wikipedia? Anyone who can will be handsomely rewarded with, er, five stars. Just to make it clear, I'm the layman.

Astronomy Top Contributors only: Please tell me a little about yourself and why you're enthralled by cosmology? There seem to be a few long standing top contributors on this forum who have endured the waves of 2012 and was-there-a-UFO-in-my-back-yard-last-night? questions to respond to many complex and exotic questions regarding space/time, and often with great lucidity. I have a good deal of respect for these people. But who are they? Top notch scientist at CERN or simply someone with a lifelong fascination on the universe? I dunno. Thus, the question above.

In which university in dubai offers a degree program in Astronomy,Astrophysics,cosmology or space science? Im 21 yr old guy who has completed the 1st year of three year degree in astronomy and physics in the uk. And im interested in continuing my course in dubai. Im 21 yr old guy who has completed the 1st year of three year degree in astronomy and physics in the uk. And im interested in continuing my course in dubai.

How much do Christians hate Superstring theory and String Cosmology? Since it tries to explain what caused the big bang? The very thing their entire religion is rooted on? Jazzbear your answer exactly shows what i mean

cosmology....? -We say that the value of omega (exact) should be of 1,023 +- 0,02, which suggests that space with 3 dimensions is closed? -the metric fluctuates in the infinitely small, then why its principal characteristic,its signature, should remain fixed? -Is the mode ultracour of quantum gravity intrinssically topological so that the continius degrees of freedom desappear? -Today, the speed of expansion of the universe rises with 72 km/s, and the value of the density of the universe is lower than the value of critical density. If the value of the universe exceeds the critical value, the expansion of the universe will be reversed completely and thus ended up this finding with the length of Planck? (big crunch)

How did a falling apple help in advance cosmology?

Evolution in Biological Sciences and Evolution in Cosmology. What is the difference? Seems to me that Biological Science describes Evolution of biological organized systems with laws and mechanisms differents from the way that Cosmology or Astronomy describes the Evolution of others physical systems, like particles, atoms, astronomic systems. Do you know which are the differences? Do you believe that the Evolution of living beings is different from the Evolution of the so called "non-livings"? Do you believe that the Universal History is shared in two blocks, one different from the other?!

Is Cosmology and its branches of science the only important profession on Earth.? I think in my perfect world, 75% of the people on Earth would be studying the origins of the Universe. Ugh, the simpletons are taking this to literally. The meat of the point is that nothing else is important, nothing. wtf, you think a doctor is more important than finding out the origins of the universe? Godamn I wish people would evolve quicker.

What if people knew the difference between "biology" and "cosmology"?

What is the difference between Cosmology, Astrology, Astronomy, and Cosmetology?

What is considered the spiritual aspect of Africana studies? Is it ontology, cosmology or axiloogy?

Do you have a PhD in Astronomy, Astrophysics or Cosmology? I know some, but very little, about this subject. I read answers that are "all over the map" or should I say "all over the cosmos" . It would be most helpful to have answers from someone who can communicate to a layman and who actually knows something. I would like to thank all of you for your excellent answers.

Cosmology- who is not overwhelmed by its study? All the work that has been done since Einstein in Cosmology is mind-blowing. How can anyone conceptualize the vast amounts of space and time and make sense out of it? I know that many cosmologists, themselves have reacted viscerally to new discoveries and have the same difficulty I have. But what keeps them on track? Is it the mathematical formulas that they develop that can keep them grounded? Or are they stumbling blindly through their work? I find cosmology and quantum physics fascinating, but I often get lost because their ideas and theories are so unfamiliar. What do you think? Bradschum, yeah! the string theory seems to answer a lot of questions, but trying to grasp the concepts of all you mention gives me a queasy stomach!

What field of science encompasses the study of time travel? Would it be cosmology? or quantum physics? I want to study the field of science that deals with time travel, so I'm just wondering. (I wish "Time Travel" could be a major :) )

Any new good cosmology book for the "layman"? Are there any new entertaining (not getting into mathmatics) cosmology books for the intelligent, but mathmatically illiterate person. Last couple I read and liked are: Elegant Universe: Brian Greene Fabric of the Cosmos: Brian Greene Parallel Worlds: Michio Kaku Thanks

What are the cardinal points of orientation of this consumptive cosmology? R there disadvantages/benefit of tying contemporary identity to consumption? Watch online the documentary The Persuaders @ http://www.pbs.org/wgbh/pages/frontline/... DOUGLAS RUSHKOFF: It was near the end of my tour through the landscape of persuasion that I came to realize how the problem of clutter finally gets solved. Marketers find a way so deep inside each of us that it no longer feels like persuasion at all. Maybe we are in control. Once the market becomes the lens through which we choose to see the world, then there's no "us" & "them" anymore We're all persuaders STUART EWEN: The secret of it all, the secret of all persuasion, is to induce the person to persuade himself ROBBINs, compared Navajo curer’s practice of sandpainting to the Persuader practices, suggests that each creates a cultural cosomology to locate & define identity Robbins writes “contemporary sandpainters construct for us a culture in which every individual enacts the identity of consumer" the documentary is free online

What is the scope for astronomy or cosmology?

Explain what redshift is and its significance in modern cosmology and astronomy? Space,science

What did Cosmology calculate for the recession velocity of space in the Universe?

Is being interested in cosmology and the workings of the universe more of a man thing? Don't shout at me girls. I only ask because none of my female friends are remotely interested, and it's only men that are willing to talk about things like this. (Please don't confuse lack of interest with lack of intelligence - I haven't).

Compare and contrast the moon in celestial cosmology and in American celestial cosmology? Chinese Mid- Autumn Festival *Compare and contrast the moon in Chinese celestial cosmology and in American celestial cosmology?

right now iam in 1st bsc iwant to do some kind of research in cosmology tell me some intresting topics? Iwant to do some good research in cosmology that can cost me little time can u help me with this,please......

What is the difference between the definition and meaning of the words "Astronomy" and "Cosmology"

What are the basic observations about the universe that any theory of cosmology must explain?

An introduction to cosmology. Recommended reading? I would like to learn more about cosmology. Could someone recommend a good introductory book on the subject for the layperson, and a more advanced text to follow it up with? The reading is just for personal interest, not formal study. I've studied Stage II mathematics at university but as far as physics goes, nothing beyond highschool level. So something appropriate to that level. Thanks!

Is there any special graduation degree in cosmology, astronomy, astrophysics, anything related to space?

What is the relationship of cosmology and geology?

How long have humans engaged in Cosmology?

Wat is the major difference between cosmology and astrnomy?

What can I do to become a physicist? Especially in Cosmology? Please guide me.? Cosmological Physicist is the one who wonders how all things came to existence.How to become it?

What is the de Sitter effect and de Sitter cosmology?