Russia is in the process of developing nuclear clocks capable of measuring time near black holes. These advanced clocks, as described by Alexander Sergeyev from the Russian Academy of Sciences, will enable precise positioning in a gravitational field, even when satellites or spacecraft are distant from Earth.

The functionality of these clocks is grounded in the theory of general relativity, where time moves slower in higher gravity. This innovative technology is set to revolutionize time measurement in extreme gravitational conditions.