Space agency is investigating after Maven abruptly stopped communicating to ground stations over the weekendNasa has lost contact with a spacecraft that has orbited Mars for more than a decade, though the US space agency said it was trying to re-establish a communications link.Maven abruptly stopped communicating to ground stations over the weekend. Nasa said this week that the spacecraft had been working fine before it went behind the red planet. When it reappeared, there was only silence. “Telemetry showed all subsystems working normally before it orbited behind [Mars],” Nasa said in a statement. Continue reading...