The distribution of mass in galaxy halos might affect how big the central supermassive black hole is, and how tightly wound the spiral arms are.
Posts by Mike
Feb 20, 2009
Human World
2 Comments
This biologist sees a close connection between the health of frogs and the health of humans. Hayes studies how pesticides interact with hormones.
Jan 18, 2009
Human World
6 Comments
Hear Nobel laureate Kenneth Arrow talk abou the relationship between scientific innovation and economic progress.


