The Astronomer’s Notebook

Popular articles and ideas of Prof. Christopher J. Conselice

“All the universe, but not all at the same time”

For recent blog posts – click here

Below are a collection of articles on various topics throughout all of astronomy. Some of these are very old from around 1999 and later. It is interesting to however see how our understanding of, and even planning for, astrophysics has changed over time. In general the information in these are still correct, although scientifically some of these topics we know more about. These are however a good way to learn about astronomy.


They make up most of the universe, all 2 trillion of them. Here are some articles on different aspects of galaxies and galaxy formation.


Stars and planets make up galaxies and of course are where we host life. There is some information about them here.


Stuff on cosmology and the origin of the universe.

Topics to read and learn about

“The history of astronomy is a history of receding horizons.”

Edwin hubble

About this Site

Astronomy and cosmology, and everything in the universe. Caveat emptor.

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  • astronomynotebook@gmail.com

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