Lesson: The Big Bang and the Fate of the Universe Physics
In this lesson, we will learn how to describe the theories for how the universe began and the different eventualities of the universe.
Cosmic microwave background radiation was emitted as radiation just after the big bang. It has been traveling through space since then, and the expansion of the universe has caused the wavelength of the radiation to . We now detect the background radiation as radiation.
Which of the following observations is considered to be evidence for the existence of dark matter?
If the density of the universe is than a particular value, then the universe will continue expanding forever. This eventuality is known as the .