Original version

BBC World Service Australasia

Science in Action

Science In Action

Factual: Science & Nature

Factual: Science & Nature: Science & Technology

The BBC brings you all the week's science news.

BBC World Service Online

BBC World Service schedule for American satellite radio and the Caribbean

BBC World Service Americas and the Caribbean

BBC World Service

BBC World Service Europe and the Middle East

BBC World Service South Asia

BBC World Service East Asia

BBC World Service East and Southern Africa Schedule

BBC World Service East and Southern Africa

BBC World Service West and Central Africa Schedule

BBC World Service West and Central Africa

Science In Action: Hidden Secrets of the Great Pyramid

Magazines & Reviews

crop_GettyImages-157182383.jpg

02/11/2017 GMT

Hidden Secrets of the Great Pyramid

BBC World Service - Science In Action, Hidden Secrets of the Great Pyramid

Particle physics has helped reveal a tantalising void in the Great Pyramid in Giza

A hidden void has been uncovered under the Great Pyramid in Giza. Using a new technique using muons which are a by-product of cosmic rays from the Universe.  Explorers have visualized what they think could be a large void at least 30 metres long above the Great Gallery in the 4500 year old Pharaoh Khufu’s Pyramid.

Atlas of the Underworld 
When the Earth’s crust slides under the surface at subduction zones, you might expect that the rock melts and gets amalgamated into the Earth’s Mantle. They do – eventually - but over millions and millions of years. This means that ocean-bed rock and continental rock, from as far back as 300 million years ago, exist as lost continents and islands in the inner Earth. New work using earthquake waves has located almost 100 such structures.

Pharaoh’s Serpent 
Some of you may remember an indoor firework trick called the ‘Pharaoh’s Serpent’. You lit an ‘egg’ with a match, stood back and watched while a snake-like substance instantly grew out of the egg, meanwhile the room was engulfed in clouds of sulphurous smoke. It’s a party trick displaying the wonder of chemistry’, that’s been around since Victorian times and videos of the remarkable reaction are having a resurgence on the internet….but what’s it all about and why are chemists now, so interested in the party trick? Chemists re-examining the chemistry of the Serpent think it may have some more practical applications in superconductors.

Picture: Pyramids of Giza, Credit: stevenallan/Getty Images

Presenter: Roland Pease
Producer: Fiona Roberts

Accessibility links

Programme Index

Science In Action

Hidden Secrets of the Great Pyramid

Genres

Formats

Brand

BBC World Service Australasia

About BBC World Service