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What evidence is there that the universe was different in the past?
Wiki User
∙ 9y ago
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.
Wiki User
∙ 9y ago
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What are the observations that tell us that the universe is changing?
Mainly that galaxies that are very far away (i.e., from the distant past) look different to galaxies that are near-by (from the more recent past).
Is expanding universe accurate?
All the available evidence strongly indicates that the Universe is, indeed, expanding.
How does expanding universe provide evidence for big bang theory?
It is not so much that the universe is expanding, but rather the rationalization for its expansion that provides evidence to support the Big Bang Theory. The Big Bang supports interpreted observational evidence of the Cosmic Microwave Background Radiation (CMBR) barrier that there is an evolutionary expansion of the universe which promotes a finite age for the universe.
What is the evidence of Kepler's universe theory?
because kepler was smart
Which of these facts is the best supporting evidence that the universe is expandingThe stars vary in chemical composition The galaxies can spin to form eddies. The universe is filled with galaxies of?
None of them. The best evidence is the redshift.
Is there anything past this universe?
Scientist speculate there may be theoretically, but there is no evidence that there is any universe other than this one.
Is coal evidence of lifes past?
Coal is evidence of past plant life.
What is the theory of steadystate?
That is a theory that, while the Universe expands, new matter is created (at a very slow rate); the final result is that the Universe looks the same today as in the past. This is an alternative to the Big Bang theory (while acknowledging the expansion of the Universe); however, it contradicts more recent observations. In the past, the Universe was indeed quite different from today.
How is studying the past part of biology?
Most scientists that contributed to biology were of the past, and the only evidence of evolution is in the past. History is a completely different aspect, though, and has little to do with biology.
What is evidence of the past?
The past participle is evidenced.
What are the observations that tell us that the universe is changing?
Mainly that galaxies that are very far away (i.e., from the distant past) look different to galaxies that are near-by (from the more recent past).
Is expanding universe accurate?
All the available evidence strongly indicates that the Universe is, indeed, expanding.
What is the past participle of evidence?
The past participle is evidenced.
What are two pieces of evidence of the big bang and that the universe is expanding?
1) Red shift seen in all distant galaxies, whose size is propotional to the galaxy's distance from us. 2) Existence, isotropy, and spectrum of the cosmic microwave background radiation.
How does expanding universe provide evidence for big bang theory?
It is not so much that the universe is expanding, but rather the rationalization for its expansion that provides evidence to support the Big Bang Theory. The Big Bang supports interpreted observational evidence of the Cosmic Microwave Background Radiation (CMBR) barrier that there is an evolutionary expansion of the universe which promotes a finite age for the universe.
What destroyed the steady state theory?
Briefly, the Steady State theory assumes that the Universe looked the same in the past as it does now. Observations of distant galaxies showed that this is not the case - distant galaxies are quite different to the ones that are closer by. Note that if you look at distant galaxies, you are observing the past of the Universe, because of the time it takes light to get here. That evidence played a part, but it was the detection of the "cosmic microwave background radiation". That was what convinced most astronomers that the Big Bang Theory was correct.
Was the universe colder or hotter in the past?
Colder
