The 5th issue of Aerospace Lab, the Onera International Journal, is on line. It is devoted to "Lightning Hazards to Aircraft and Launchers". The four first issues, still on line, were respectively dedicated to: the Optical Diagnostics of Flows, CFD Platforms and Coupling, High Temperature Materials, Mastering Complexity. The next one will present advances on "Flow Control: the Renewal of Aerodynamics" (June, 2013). www.aerospacelab-journal.org