JA
15-03-2018, 06:37 AM
An interesting article on Galaxy rotation, once every billion years .....
http://www.valuewalk.com/2018/03/astronomers-study-galaxy-movement/
(Better sort that tracking out ....:D:D:D)
Best
JA
http://www.valuewalk.com/2018/03/astronomers-study-galaxy-movement/
(Better sort that tracking out ....:D:D:D)
Best
JA