If you happen to be enjoying a sunny day, thank the bright surface of the sun, known as the photosphere. At a piping hot ...

A mysterious black hole in a distant galaxy just woke up after decades of silence—and it’s putting on a cosmic light show!

For example, we don’t know why iron inside the sun is so opaque ... the team exposed a thin sample of iron to X-rays and pointed spectrometers at the X-ray source. The spectrometers observed ...

Karnick says it wasn’t known if X-rays in space were feasible, due to concerns that natural background radiation from space might affect the quality of the image. “The first images we’ve ...

Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...

Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...