The Milky Way (Introduction)
An interesting description of our galaxy and theories about its formation. We sit 2/3rds of the way out on the second arm in the goldylocks zone of safety.
http://www.physorg.com/news/2011-12-insight-bar-center-milky.html
Complete thread:
- The Milky Way -
David Turell,
2011-12-20, 15:00
- The Milky Way: still enlarging - David Turell, 2018-06-20, 19:06