Hi again Ron,
This is the link to the post I referred to on the super-massive black hole candidate at our galactic centre, Sag A*
http://www.iceinspace.com.au/forum/s...ad.php?t=35557
The links to her website are also worth a look, particularly the animation of 15 yrs worth of data of the high velocity stars in orbit around Sag A*.
Regards
Trevor