Because we’re inside the galaxy, mapping it is difficult, so many details of its structure remain to be determined. Spirals are only one of four major classifications for galaxies; the others ...

Our home galaxy’s demise isn’t estimated to occur ... dormant conditions (for a black hole), the one inside J23453268−0449256 spews chaotic, 6 million light-year-long jets of energy.

This cosmic cannibalism causes blasts of light that can outshine the combined light of every star in the host galaxy of the TDE, alerting scientists to a gory stellar death. This particular TDE ...

Until now, the closest known supermassive black hole from beyond the Milky Way was the one inside the Andromeda galaxy, about 2.5 million light-years from Earth. It is the nearest major galaxy to ...

The stars in a binary can vary widely in mass, size, and brightness, and their interactions often shape their evolution in ...