Boom Supersonics XB-1 taking off for a test flightBoom SupersonicCommercial supersonic aircraft may soon return for the first time since Concorde was retired in 2003. Several companies are working on designs and NASA is investing millions in developing technology to eradicate the problematic sonic boom such planes generate. However, whether there will be a market for these kind of flights isnt known, especially given their large carbon footprint.Aircraft create shock waves once they pass the speed of sound, which is about