A blackhole with the mass of nearly 2.6 million Suns lies at the heart of our Milky Way galaxy with a seductive force that sends stars close to it speeding by at 965 kmph, astronomers reported on Wednesday.Elsewhere in the galaxy, the astronomers told of a kind of "Old Faithful" blackhole thet siphons off matter from a nearby companion star, then periodically erupts in a blast of plasma. Scintists even made a audio recording of these eruptions.