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Tag Archives: visibility limit

Comoving Distance [Q&A]

Atul of Canara College asks, how is it possible that we can see quasars that are 28 billion light years away, when the Universe itself is only 13.7 billions years old? How can light have traveled farther than the Universe has existed? This can happen because the Universe is expanding. Distances to quasars and similar […]

the observable Universe [Q&A]

Supriya of Poornaprajna College asks, what does the Universe look like beyond the limits to our visible Universe? It is a good point to make that the Universe is actually bigger than what we can see. According to the standard cosmological model, in the early stages of the Big Bang, the Universe underwent a rapid […]