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The discovery that the universe appears to be expanding led to a widely accepted theory called?
Wiki User
∙ 12y ago
Edwin Hubble was one of the scientists who realized that the red-shifted light from far-away galaxies indicated that the universe is expanding.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoThe big bang theory
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What theory explains why the universe is expanding at a great speed?
The cosmological theory holding that the universe is expanding, based on the interpretation of the color shift in the spectra of all the galaxies as being the result of the Doppler effect and indicating that all galaxies are moving away from one another.The cosmogonical theory holding that a violent eruption from a singularity led to the formation of elementary particles, the subsequent formation of hydrogen and helium, and the dispersion of the galaxies from these elementsSkaterboy15
In what direction is the universe moving?
Nearly all galaxies have a component of motion directly away from us. The farther a galaxy is from us today, the faster it appears to be receding from us.Nearly all galaxies are moving away from Earth. This is because the universe is expanding.
What evidence is there that the universe was different in the past?
We observe the universe with our various telescopes. Since light travels at a finite speed, it takes time for any light to travel from an object (say, a galaxy), to your telescope. Therefore, for any distant object, you are not seeing the object as it appears now, but as it appeared when the light left it.For very distant objects this can be billions of years, and further back in time you look, the more different the universe appears. Beyond about 13 billion years, there are no galaxies, for example.
What are the weaknesses in the theory of the big bang?
Most of our universe appears to consist of dark matter. The hot inflationary big bang theory does not currently account for this. The rate of expansion of our universe is unexpectedly increasing. Again, the big bang theory lacks explanatory power for this phenomenon (attributed to "dark energy"). The theory DOES account for the synthesis of matter from and ever expanding cloud of energy (primordial nucleosynthesis--the origin of early hydrogen and helium). It explains the flatness of the universe, its homogeneity (inflation), and present observed temperature (cosmic microwave background radiation, CBR or MBR). The age of the universe has also been reliably determined to be 13.7 billion years. The weaknesses are by no means sufficient to overturn the theory in favor of any superior competitor. None come remotely close, yet.
Which theory of universe formation was proposed in 1980?
The inflationary hypothesis was developed in the 1980s by physicists Alan Guth and Andrei Linde. Inflation explains the origin of the large-scale structure of the cosmos. Quantum fluctuations in the microscopic inflationary region, magnified to cosmic size, become the seeds for the growth of structure in the universe. Many physicists also believe that inflation explains why the Universe appears to be the same in all directions (isotropic), why the cosmic microwave background radiation is distributed evenly, why the universe is flat, and why no magnetic monopoles have been observed.
The people who study the stars what does your universe appears to be doing?
Expanding
Is there any proof that the universe is changing?
Yes, there is proof. The universal redshift that appears in all distant electromagnetic spectra proves that the universe is expanding.
What do scientists know about dark energy?
In physical cosmology, astronomy and celestial mechanics, dark energy is a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe. Dark energy is the most accepted theory to explain recent observations and experiments that the universe appears to be expanding at an accelerating rate. In the standard model of cosmology, dark energy currently accounts for 73% of the total mass-energy of the universe.
The scientific explanation that suggests the universe is expanding relies on two main concepts?
The first concept is that of the redshift, which is the observation that light from distant galaxies appears to be shifted towards longer wavelengths. This indicates that these galaxies are moving away from us. The second concept is the cosmic microwave background radiation, which is a faint radiation that is present throughout the universe and is thought to be leftover electromagnetic radiation from the early stages of the universe. Together, these concepts support the idea that the universe is expanding.
Why the universe is black as the sun is present in the universe?
The Universe appears to be dark because space (meaning nothing), contains no matter for the sun to shine on. Also, another reason is that the universe is so large that, if you were to even try to look at the edge of the universe from outer space, the light would not exist beyond a certain point (because of the measurement of lightyears, and the never ending radius of the universe that is expanding). Thus, the universe is black.
Can the universe be nothing or does it have to be matter also how could the universe be expanding It can't have been a certain size because it has to be infinite right?
One question at a time in the future, okay?Can the universe be nothing: well, it could, but clearly it isn't, as any fool can plainly see (all together now: "I can see that.").Does it have to be matter: it doesn't have to be matter, but clearly part of it is. ("I can see that.")How could the universe be expanding: how is not really a good question here. It appears to be expanding, though. You're excused for not being able to see that; it's kind of subtle and you have to know what to look for.It has to be infinite: well, actually, no it doesn't. And for a variety of reasons, we don't think it is.
What theory explains why the universe is expanding at a great speed?
The cosmological theory holding that the universe is expanding, based on the interpretation of the color shift in the spectra of all the galaxies as being the result of the Doppler effect and indicating that all galaxies are moving away from one another.The cosmogonical theory holding that a violent eruption from a singularity led to the formation of elementary particles, the subsequent formation of hydrogen and helium, and the dispersion of the galaxies from these elementsSkaterboy15
Is the vacuum of space protection for which the universe is against what it is that its expanding into. just like our world has an atmosphere to protect us against the vacuum.?
Since Time and space seem to have began with the big bang, we simply dont have any way of understanding anything outside of it . the best we can do is say that it appears that the universe is infinite in size and is expanding and accelerating. It looks like there is no end point of the universe.Its hard to accept . But it would be equally hard to accept if there was an end point. Its a great question but no one can really give an intuitive answer, sorry.
What is the brightest star in the universe apart from our Sun?
Our sun is not the brightest star in the universe. It only appears brighter because it is much close than any other star. The brightest star as it appears in the sky is Sirius.
How many times does the word universe appear in the Bible?
The word "universe" appears 4 times in the NIV translation. The word "universe, however, does not appear in the King James Version.
What theory maintains that the universe exist and appears for some reason and is an argument for the existence of god?
Creationist beliefs maintain that we and the universe were created by God.
In the sonic universe is sally just in the TV series?
No, she also appears in the comic books.
