MEXICO CITY – The drumbeat had been unmistakable. For months the powers that be had talked of “concerns” over distance gains in recent years and how the impact on the game has been, “horrible.” On ...

One of the greatest problems that confronts astronomers at the present time is an accurate knowledge of the distances of stars. From the earliest times, the relative positions of stars or their ...

A major advance reveals deep connections between the classes of problems that computers can — and can’t — possibly do. At first glance, the big news coming out of this summer’s conference on the ...