https://www.sciencealert.com/images/2022-02/processed/jupiter-aurora_1024.jpg ======================================================================== Jupiter has finally been observed spitting out X-rays in high-energy wavelengths. Emanating from the giant planet's permanent auroras, and detected by NASA's space-based X-ray telescope NuSTAR, the emissions are the most energetic light seen coming from any planet in the Solar System (aside from Earth). The detection could shed light on the most powerful auroras in the Solar System, and solves a longstanding mystery: why the joint ESA-NASA Ulysses spacecraft didn't detect any Jovian X-rays in its nearly three decades of operation between 1990 and 2009. Jupiter's auroras constitute an absolutely fascinating phenomenon. At both its poles, the...