Page "Crux" Paragraph 6

Contrary to popular belief, Crux is not opposite to Ursa Major.

In fact, in tropical regions both Crux ( low in the south ) and Ursa Major ( low in the north ) can be seen in the sky from April to June.

Crux is exactly opposite to Cassiopeia on the celestial sphere, and therefore it cannot appear in the sky with the latter at the same time.

For locations south of 34 ° S, Crux is circumpolar and thus always visible in the night sky.