1. ★University of Cambridge: The University main site.
   

2. ★Cavendish Laboratory: The Astrophysics Group site at the Cavendish Lab.
   

Python for Astronomers:

1. ★Download Python: http://www.python.org/getit/
   

2. ★Astrophyton: http://www.astropython.org/
   

3. ★Practical Python for Astronomers: http://python4astronomers.github.com/
   

4. ★Python-Astro: http://python-astro.blogspot.mx/2012