Inside the Debacle That Led to the Closure of El Paso’s Airspace The F.A.A., citing “a grave risk of fatalities” from a new technology being used on the Mexican border, got caught in a stalemate with ...

The unusual event, never seen before, might be a way small comets are “blown to bits” in the solar system. By Jonathan O’Callaghan Two research teams have identified possible landing sites for Luna 9, ...