Strongest solar radiation storm in over 20 years sparks dazzling auroras across Europe and US, raises concerns for satellites, flights and astronauts

Solar radiation storm: The Sun has released the strongest solar radiation storm in more than 20 years, triggering auroras across Europe and raising concerns over satellite, aviation, and astronaut safety. The solar storm — which is the largest in over two decades — is the outcome of a mass eruption of charged particles that left the sun on Sunday.