NASA's NuSTAR telescope reveals hidden light shows on the sun

Even on a sunny day, human eyes can't see all the light our nearest star gives off. A new image displays some of this hidden light, including the high-energy X-rays emitted by the hottest material in the sun's atmosphere, as observed by NASA's Nuclear Spectroscopic Telescope Array (NuSTAR). While the observatory typically studies objects outside our solar system—like massive black holes and collapsed stars—it has also provided astronomers with insights about our sun.