On Mars, a Sixteen-Minute Pause Between Every Question and Answer

VALLES MARINERIS — The message from Earth arrives sixteen minutes after it was spoken, and the reply takes sixteen more, so a simple exchange now costs better than half an hour. The gulf has been widening all summer as the planets separate, and the roughly 50,000 residents of the Valles Marineris colonies have adapted by giving up the habit of conversation. "You stop asking questions you need answered quickly," said Priya Ramachandran, a habitat systems engineer who records long messages for her daughter in Jakarta and does not wait for the beep. Colony administrators say the settlement now runs almost entirely on local decision-making; Earth is consulted, not obeyed, because Earth is too slow to obey. The population is expected to pass a new threshold before month's end. For now, the colony lives in the pause — a place where every question sits alone for a while before its answer can begin the long fall home.