be mysterious, be curious

This phenomenon is mysterious.

この現象は不思議です

This phenomenon every night is mysterious.

毎晩この現象は不思議です

This phenomenon seen on the lake every night is mysterious.

毎晩湖で見えるこの現象は不思議です

This phenomenon of blue light seen on the lake every night is mysterious.

毎晩湖で見える青い光のこの現象は不思議です

This phenomenon of blue light seen on the lake every night is mysterious even to scientists.

毎晩湖で見える青い光のこの現象は科学者たちにも不思議です