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what evidence shows that the universe is expanding?

picture credit universe today. Seeds Chapter 14 Problem 4RQ. What tools did they use? What evidence shows that it began with a big bang? It is an intrinsic expansion whereby the scale of space itself changes.The universe does not expand "into" anything and does not require space to exist "outside" it. Therefore if the universe is not expanding, the redshift of light with increasing distance must be caused by some other phenomena–something that happens to the light itself as it travels through space. It was during the 1920's that Edwin Hubble provided the first evidence that we live in an expanding Universe. Check out the link for more. But it most definitely cannot be because the Universe is expanding differently in different directions. In evaluating evidence, you throw away the conclusion. This is what we learned in physics. Expanding Universe The distant galaxies we see in all directions are moving away from the Earth, as evidenced by their red shifts. The fact that the universe is expanding and measuring at what speed and in what direction it is expanding in certain places or certain distances leads to the conclusion that the universe has expanded from a primordial initial condition at some finite time in the past. We have step-by-step solutions for … The "Big Bang" is merely an extrapolation into the past. Red shift of Galaxies. What evidence shows that the universe is expanding? No, there is evidence that the universe is expanding, because we have observed red shift in many outer solar systems. What does it tell us about the nature of space and time? “We are not speculating now as to what could cause the redshift of light,” explains Lerner. Then their is cosmic microwave background radiation. What does it mean for the universe to be expanding? The problem though is that observations of quasar light curves do not fit the doppler interpretation. Then you look, very carefully, at the method they used to gather their evidence. Start studying Chapter 18. We have step-by-step solutions for … Continued evidence of redshift galaxies shows us that it is still expanding, and at a rate faster than it was billions of years ago. In 19920 Edwin Hubble studied spectra of different galaxies and found the red shift variations.He found the Galaxies that are far away is reseeding from us at great speeds. What are the causes? Astronomers know that the Milky Way is not the centre of the Universe and so these galaxies are expanding in distance between each other. Learn about and revise red-shift, the expanding Universe, the Big Bang theory and the future of the universe with GCSE Bitesize Physics. It's really facinating stuff. Learn vocabulary, terms, and more with flashcards, games, and other study tools ... Summarize the first observational evidence found for the expansion of the Universe and a possible beginning of ... which means that the space in the Universe is expanding.

That's step one.

The reason is simple: the Universe is expanding, and the rate at which it’s expanding means that even at the speed of light there’s a limit to how far we can go. Fresh evidence suggests that the universe is expanding faster today than it did in its infancy, a difference that has set off a search to understand what cosmic forces could be at play. This is an irrefutable fact about our Universe, and can only be explained by an expanding Universe. If the universe is expanding they will be at a complete different location in the future. The evidence which shows that the Universe is expanding and it began with the Big Bang. Seeds Chapter 14 Problem 4RQ. Asked in Astronomy What shows the galaxies expanding ? But there is also direct evidence that the universe was once smaller than it is now. AND what is the ultimate fate of the universe? There is overwhelming physical evidence that the universe is changing. Furthermore, galaxies further away from us are more red shifted than galaxies closer to us, showing that they are moving away faster. Textbook solution for Horizons: Exploring the Universe (MindTap Course List)… 14th Edition Michael A. SYNOPSIS: Experimental evidence shows that our universe is expanding at an ever increasing rate. The evidence which shows that the Universe is expanding and it began with the Big Bang. Hubble's law describes this expansion.. The evidence - for example, from the redshift, normally attributed to a Doppler effect - is that indeed, the Universe is expanding. Technically, neither space nor objects in space move. The expansion of the universe is the increase in distance between any two given gravitationally unbound parts of the observable universe with time. Observations of the universe have shown that not only is the cosmos expanding, as we have known for more than a century, but that the universal expansion also is accelerating over time. One important piece of evidence that the Universe is expanding is the Doppler shift. If you assume that the doppler effect is responsible for the red shifts of distant galaxies then that would mean that these galaxies are generally flying away from each other and the universe is therefore expanding. Textbook solution for Horizons: Exploring the Universe (MindTap Course List)… 14th Edition Michael A. The Hubble Law shows that most galaxies' light is shifted towards the red end of the spectrum (red-shifted).