No. Nothing man-made has left our galaxy.
Not in reality. But may someone went out of milky way through dreams
No, no robot has gone to Pluto, other than the onboard computers of the New Horizons spacecraft, which observed Pluto from orbit.
We've never had any kind of report from any person or thing telling us that they were outside the galaxy and couldn't see it, and there's not the slightest shred of any scientific reason to suspect that you can't. Someone has pulled your chain.
Go outside on any clear night and look in the sky. Every star you can see is in the Milky Way Galaxy.
There are planets within every galaxy, so yes
No. I don't believe any planets have been detected outside of our Galaxy. Within our Galaxy, planets are detected by inference not visual techniques. See link for lists of known extrasolar planets
Yes, of course. Sensors are necessary to check own status and/or of any object (like human target). Without sensors any robot is not able to search, find, indentify or even to move in difficult area. Sensors are important to receive feedback for the human, who is steering a robot. If robot is at automatic drive (no human is steering - only on software running) sensors are also very important to the robot to get any information about the outside, the surrounding of it.
It is not currently known whether there is ANY life, ANYWHERE outside of planet Earth.
No. We can't take a picture of the whole Milky Way from inside the middle of it. We would need to somehow get a camera outside of the galaxy to take that picture.
From what we understand of the environment of space and of physics at the moment, no.At the moment we can not even get to another planet in or solar system let alone to another star in our galaxy.
We don't know of any planets that aren't within the Milky Way galaxy, but that doesn't mean much; stars that are not in a galaxy are rare, and the nearest such stars are too far away for us to have any hope of finding any planets.
It isn't currently known whether there is ANY type of life outside of planet Earth.