Cosmology – Page 5 – National Radio Astronomy Observatory

Voids in Space

There are a number of “voids” in the universe, which are regions which have comparatively few galaxies within them,…

The observed expansion of our universe allows us to see galaxies as they were when our universe was younger. …

Our current understanding is that the universe appears to be infinitely big. What is actually happening is that the…

Since the Hubble constant is a function of redshift, it reflects a different value depending on how far back…

Let me refer you to an Ask Ethan blog post which provides an excellent detailed answer to your question. …

Question: It is said that light traveling from a star that is currently 10 billion light years from us…

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