J JOS New member Sep 6, 2011 #1 Ancient records show that 2000 years ago, the stars of the constellation Crux (the Southern Cross) where visible in the southern sky from Greece. Today, however, these stars can not be seen from Greece. What is the reason for this change?
Ancient records show that 2000 years ago, the stars of the constellation Crux (the Southern Cross) where visible in the southern sky from Greece. Today, however, these stars can not be seen from Greece. What is the reason for this change?
