This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

The service life of the UR-100N UTTKh intercontinental ballistic missile (ICBM) will be extended by several more years, Alexander Leonov, CEO and General Designer of the Reutov-based NPO ...