Why does everything with the word "black" in it offend niggers? Seriously, get the fuck over yourselves. Black is a color, not a racial slur. With paint, it's the presence of all primary pigments. With light spectra, it's an absence. We call it a "black hole" because no light escapes it, not because some White Supremecist astronomer was trying to push an agenda.
"Black hole" is not racist. You're just retarded and self-absorbed. And an unimaginative troll.