Olbers' Paradox

The video explores why space appears black, starting with Alba's Paradox, which suggests that in an infinite static universe, the sky would be as bright as a star. It explains that the universe is not infinite and static, but expanding, as evidenced by the redshift of distant galaxies. The video also discusses how human vision perceives the night sky as black due to its dimness, although it is actually blue due to Rayleigh scattering. The expansion of the universe and the limitations of human vision are key themes.

What evidence suggests that the universe has a beginning and an end?

Describe how Rayleigh scattering affects the color of the night sky.

What implications does the blackness of the night sky have on our understanding of the universe?