One way is Illuminati taking over, the other would definitely be a zombie apocalypse
by using the distance from Earth to various galaxies and by calculating the ages of old, nearby stars.
Two ways are by temperature and brightness
There is no end. They Universe is always expanding due to the big bang. ----------------------------------------------------------------------------------------- No, the Universe actually closes in on itself. If you left from here in any direction, and you went far enough and fast enough, you would arrive right back here. In any case, the Universe does not have any boundaries.
two ways are diffuse and regular reflection
We have no way of knowing the answer. Will the universe ever end at all? Again, we don't know. Right now, we suspect that the universe may expand forever; we cannot "see" enough mass to cause the expansion to slow down. But then, we can't see enough mass to keep the Milky Way together; it is spinning entirely too quickly for the mass that we know about to generate enough gravity. Some scientists have postulated some form of "dark matter", and perhaps even a corollary "dark energy" to account for the mass we cannot see. If there is enough (and if it exists at all!) then the universe may, perhaps, slow its expansion and collapse into itself, at some unimaginably distant date in the future. But we're guessing, and scientists try not to guess. Much.
One way is Illuminati taking over, the other would definitely be a zombie apocalypse
We know NOTHING about the "end of the universe". We don't know if the universe WILL end, or what might cause this to happen, or what would come "after" the end of the universe, or even if the phrase "after the end of the universe" has any meaning at all. There are some pretend "scientists" who can tell you, in amazing detail, what the "end of the universe" might look like. But no two of these actually agree, and all their guesses are based on shaky mathematical models which may (or may not!) have any relevance or accuracy. Science is, to a very large degree, the study of our ignorance. We try to learn a little bit, but for every new fact we discover ten new questions, so our ignorance grows faster than our knowledge.
One, that the universe is infinite, thus meaning it continues forever. Two, that the universe is finite (has an end) and is expanding but gradually reducing speed and in the future may start to reverse and contract. In the end compacting into an immense power and then exploding. A cycle. Big bang.
In frequency or wavelength.
help eachother
I would suggest you ask one or two questions about one topic, not 10 at a time. Also, if you have so many questions about one topic, you can look it up in the Wikipedia. In this case, "End of the Universe" will redirect you to "Ultimate fate of the Universe", a very informative article. Then you might come back here and ask a few more specific questions. Please note that not all details about the end of the Universe are known for sure. This is still an area of active research. In general, the Universe is expected to continue expanding indefinitely. Therefore, no very specific date for the end of the Universe can be given. However, eventually there will be less and less available energy, so there will come a time when the Universe will not be able to support life. Not just "life as we know it", but any life - since it seems fairly safe to assume that all types of life will have one thing in common: they need free energy.
Look it up
doo doo
Two ways that the expansion of urban areas might be harmful to nearby ecosystems is that is could destroy animal's natural habitats and it could also pollute the environment.
by using the distance from Earth to various galaxies and by calculating the ages of old, nearby stars.
A circuit can only go two ways. They are from the beginning to the end or from the end to the beginning.
No the universe isn't heading into a big crunch because there's nothing for our universe to crunch into. Our universe is never ending so there's no room for anything else. But some people believe that one day a dimentional shift may occur and our universe will collide with an alternate on creating disaster but our universe won't be heading into a big crunch but our galaxy is heading strait towards M31 which is another galaxy billions of light years away the two galaxies will collide and we might end up with some more planets and the gravitational pull will change because of the collision.Isaiah.c