Another Stellar Manipulation question or 2

[jim]

If one attempts to open a warp hole to a system that has the anti-warphole shield, I know that the attempt fails. However, what I do NOT know is if:

1) Does the attempter get told during the turn, as if trying to build the 7th facility on a 6 facility planet? Or is it not until next turn?

2) Does the empire(s) who owns the unsuccessfully-targeted system get made aware that an attempt had been made to make the warp hole?