Journey to the Galactic Center

The black hole is the core of a galaxy?

I read they are trying to image the actual event horizon in the radio spectrum. So what does that mean? Does this mean an image that you can actually SEE an event horizon? A big black ball in the middle of an accretion disk?

I'm not an expert on the subject, but I believe that is more or less correct. The event horizon, if successfully imaged, would probably appear as a small region of little or no visibility.
Would be very cool to see, hope they succeed. :)

Horizon (doc production company) did a programme for the BBC recently called Who's Afraid of a Big Black Hole? It's on iplayer (if you're in the UK).

It featured a section with Shep Doeleman who is working at MIT Haystack trying to image our SMBH. I believe he is still developing the "telescope" to do so (i.e. using a super computer to correlate the data readings of telescopes all across the US to form one very high definition image).

According to a paper from the Haystack Observatory looking for the event horizon of Sgr A*, our SMBH is (are you ready for this?)
THE LARGEST BLACK HOLE IN THE UNIVERSE
When I first read that I was stunned. The whole thing?!! All of them? No! Can't be. Do you understand the implications of this? What if coalesence has happened or will happen? All of the other galaxies that are active, they are David Spade to our Chris Farley.

Well...if you gotta have one, shouldn't it be the biggest?

What's really amazing and a good way to view the density of black holes is to look into earth mass black holes. An earth mass black hole which is a black hole with the same weight as the earth is only 1/3rd of an inch across! Think about that. Mount Everest compacted into the density of a black hole would be the size of an hydrogen atom!

So pretty much everything in this galaxy (and probably all others) are in an orbit that is within a much greater orbit around a damned black hole? THAT IS JUST GREAT! Has anyone ever seen the movie Black Hole? I think we're all screwed.

black holes are nothing to fear.

its like fearing the sun because its a giant nuclear reactor.

Actually scientists now believe supermassive blackholes are at the center of most galaxies, it seems kind of standard issue.

Very very true. It would almost be shocking not to have a supermassive blackhole at the center as the gravitational pull is soo intense.