The chief executive of tech firm Astronomer has resigned after a video that appeared to show two of its senior staffers in an embrace at a Coldplay concert went viral. The company posted a statement on its social media channels on Saturday, saying Andy Byron had tendered his resignation, three days after a video went viral online, allegedly showing Byron and another Astronomer senior manager with their arms around each other during the band's concert in Boston.In the social media storm that followed, the pair were alleged to be having an affair.