Crazy things can happen when galaxies collide, as they sometimes do. Although individual stars rarely impact each other, the gravitational…
50 million light-years away a quasar resides in the hub of galaxy NGC 4438, an incredibly bright source of light…
The heart of our Milky Way galaxy is an exotic place. It's swarming with gigantic stars, showered by lethal blasts…
Visible-light Hubble image of the jet emitted by the 3-billion-solar-mass black hole at the heart of galaxy M87 (Feb. 1998)…
Image of lenticular galaxy NGC 1277 taken with Hubble Space Telescope. (NASA/ESA/Andrew C. Fabian) It's thought that at the heart…
[/caption] "Sgr A* is the right object, VLBI is the right technique, and this decade is the right time." So…