The SAURON project tries to study movements of galaxies and scientists discover unexpected results!

50% of elliptical galaxies are really lenticular ones.
It's a peoject at La Palma

A galaxy like NGC 4486, stellar movements have no specific direction; the galaxy doesn't turn.
NGC 3379 reveals a global rotational movement.

NGC 4450 (which is flat) has two disks rotating in opposite directions! (certainly the result of a frontal collision of 2 flat galaxies which evolved in the same plan but were rotating in opposite directions.

Thanks to Sauron, it's possible to study a galaxy's complex history!

I read about it in this month's Science et Vie.

Raoul