MISSION CONTROLLERS AT NASA-JPL HAVE RECEIVED A SIGNAL FROM NASA’S INSIGHT LANDER ON THE MARS SURFACE VIA MARCO OR A BEEP FROM INSIGHT’S X-BAND RADIO. IN THE COMING HOURS, ENGINEERS WILL BE CHECKING ON THE SPACECRAFT’S HEALTH. A POST-LANDING NEWS BRIEFING EXPECTED AT 2 P.M. PST (5 P.M. EST).