Two NASA astronauts and an Italian flight engineer took shelter in the space station’s Russian segment Wednesday as mission control analyzed a possible leak of toxic ammonia coolant aboard the complex. Initial data indicated it was likely a false alarm.

NASA officials plan to host a news conference at 2 p.m. EST (1900 GMT) Monday to update the status of the Perseverance rover’s mission on Mars. During the briefing, NASA is expected to release first-of-its-kind video captured by the mission during its descent to the Red Planet.

SpaceX carried the Israeli-owned Amos 17 communications satellite from Cape Canaveral into orbit Tuesday on top of a Falcon 9 launcher, nearly three years after a SpaceX rocket explosion destroyed a predecessor payload before it could get off the ground.