Earth may not have seven continents after all. From the earliest of grades, schoolchildren around the world have memorized ...

From space, the Atomic Clock Ensemble in Space will link to some of the most accurate clocks on Earth to create a ...

The European Space Agency’s ACES mission could ultimately pave the way for a global network of atomic clocks that make these ...

A tiny but crucial agency that maintains physical coordinates like latitude and longitude in the US is struggling as the ...

Abstract: A radio environment map (REM) is a visualization method that display electromagnetic ... Finally, the 2-D REMs are stacked in sheets according to elevation to form a 3-D REM. The simulation ...