Its primary scientific goals are to conduct a deep survey for black holes a billion times more massive than the Sun, to investigate how particles are accelerated to very high energy in active galaxies, and to understand how the elements are created in the explosions of massive stars by imaging the remains, which are called supernova remnants.
However, around 7 years ago, the idea surfaced about looking at our own sun. This may help to explain why the sun’s outer atmosphere (corona) is so hot (1 million degrees Celsius) while its surface is far cooler (6000 degrees Celsius).
The photo is the first taken of the sun by NuSTAR and is the “most sensitive solar portrait ever taken in high-energy X-rays,” according to NASA.
The green and blue portions of the image show highly energetic X-ray emissions. The red represents ultraviolet light captured by the Solar Dynamics Observatory, another NASA space telescope