INFRARED EYES

It’s impossible to see supermassive black holes directly, but that doesn’t mean we can’t see objects near to them being sucked in, like the dust and gas that surrounds them. Sagittarius A* gobbles this stuff up, sucking it in at incredible speed and creating friction that causes the particles to glow brightly in various wavelengths, including infrared. The Spitzer space telescope was able to peer through the dust cloud right onto the black hole to pick out its precise location in infrared.