How cosmic rays spotted a hidden ‘void’ within the Great Pyramid — and why we still don’t know what’s inside

[rangerrebew]

How cosmic rays spotted a hidden ‘void’ within the Great Pyramid — and why we still don’t know what’s inside
Science Nov 2, 2017 12:10 PM EDT

When it comes to exploring ancient monuments like Egyptian pyramids, classic chisels and soft-bristled brush are the excavation tools that come to mind. But for archaeologists, these tools still carry the risk of damaging concealed artifacts and structures.

Fortunately, physicists have non-destructive tools that can literally see through walls.

https://www.pbs.org/newshour/science/how-cosmic-rays-spotted-a-hidden-void-within-the-great-pyramid-and-why-we-still-dont-know-whats-inside