Returning from vacation is always a pain, as routines need to be reestablished and new ones laid down.  The time I usually spend blogging was not available as I was doing the 12 hour drive from Kaslo back to Edmonton.  So, now we are catching up slowly with a few word-light/video-heavy posts.

The PI institute does a good job of laying down some basic cosmological questions and explanations.  Dark matter (and energy, not mentioned) is a fascinating topic and leads to much speculation about how and why the universe is the way it is.

For a more comprehensive, yet still non-specialist friendly talk on the subject, check out Lawrence Kruass.