Arianespace Launch Update The final countdown for Flight Ariane #253 (VA253) was halted at 2’14’’ before liftoff during a first launch attempt on July 31 due to the unexpected behavior of a sensor inside the liquid hydrogen tank in the launcher’s main cryogenic stage. Ariane 5 is being transferred back to the Final Assembly Building (BAF), where a spare sensor will be set up and a new flight program uploaded […]