BBC The Sky at Night - Greenwich: A Journey Through Space and Time (2025)

To celebrate the 350th anniversary of the Royal Observatory, the team recreate history. In the times of the early Astronomers Royal, scientists would gather at spectacular dinner parties at Flamsteed House in Greenwich to share ideas and discuss the universe.

In 2025, 350 years on from the first ground stones being laid, we come together once again to discover how the work at the Royal Observatory defined the prime meridian, fundamentally changing our world, and blasting technology and communications forward into the global economy we know today.

Since then, world time zero has run through Greenwich, but our understanding of time has grown. It is not constant, but is in fact relative to each and every one of us. Our experience of time changes depending on where and what we are in the universe - with surprising effects that scientists are still uncovering today.

We find out if the second will need to be redefined in 2030, explore the implications of time being stretched and squeezed by gravity, and visit the most extreme regions of space that bend time back on itself - breaking physics as we know it.

Joining presenters Maggie Aderin-Pocock and Pete Lawrence at the dinner table is a glittering line-up of science communicators.

Dr Rebekah Higgitt, a historian of science and a past curator at the Royal Observatory, gives us a deep insight into the wealth of characters whose work defined modern science and technology here.