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Weighing the Universe

This lecture will explain the physics of the cosmic microwave background and the challenges in understanding where our universe came from.

Frozen in Time?

This talk will review the dramatic consequences on what we observe in the night sky that arise purely from the consequences of light-travel time effects.

This talk will explain how the speed of light was first measured, and how an obscure but brilliant patent clerk in Bern, Switzerland by the name of Albert Einstein deduced that the speed of light is the upper speed limit for everything in the Universe.

Aristotle's Lyceum

This lecture looks at the archaeological site of the Lyceum, discovered accidentally in 1996, and asks how the remains can illuminate Aristotle’s life, work, and incomparable contribution across academic disciplines, from Political Theory and Aesthetics to Zoology, Physics and Astronomy.

The Limits of Our Knowledge

There is much in the universe we will never know, and it is equally certain that we will never know all that we do not know.

Exploring Earth from Space

Today the earth is opening up its secrets as never before.

How Astronomy Changed our View of the Cosmos: from Gresham to the 21st Century

So much has happened since Gresham’s era, yet many of the questions about our cosmic origins still remain.

50 Years of Lunar Exploration

Professor Silk will describe the history of lunar exploration since 1969 and future plans for the Moon.

In the Beginning

Where did we come from? This question has always intrigued human thought. Professor Silk will describe the modern scientist's view of the origin of the cosmos.

Dark Matters

The dark side of the universe is pervasive. Most of the matter in the universe is dark, most of the energy in the universe is dark.

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