Look at this NASA picture of a giant black hole and read the paragraph. (Credit: X-ray: NASA/CXC/SAO/A. Siemiginowska et al; Optical: NASA/STScI; Radio: NSF/NRAO/VLA) Black holes cannot be seen without X-rays. If a telescope focuses on X-rays, we see a bright spot surrounding the black hole and a larger doughnut-shaped mass around that. The bright spot is gas, glowing at one million degrees. Any visible light it makes is absorbed by the doughnut-shaped mass of dust and gas around it. So we can only see it using X-rays. This is called a hidden or buried black hole. What does the photograph show to support the paragraph? a black hole seen in visible light without X-rays a buried black hole that looks like a doughnut million-degree gas inside a black hole visible light and dust outside a black hole