For as long as humans have looked skyward, the Sun has kept one of its deepest secrets close: why its outer atmosphere burns hundreds of times hotter than its own surface, in apparent defiance of the laws that govern heat itself. India's Aditya-L1 spacecraft, the nation's first solar observatory in space, has now offered the most precise answer yet — magnetic field lines in the corona snap and reconnect, releasing energy that accounts for 93 percent of what keeps those outer reaches impossibly, persistently hot. The finding, born of patient observation and a single dramatic solar eruption in A