Main content
Chris Goes Underground
Chris visits the ultra sensitive dark matter detector, Xenon 1, hidden away in tunnels in the Italian Apennines.
Duration:
This clip is from
More clips from The Invisible Universe
![]()
Jim Al-Khalili and the Puzzle of the Universe's Expansion
Duration: 03:33
![]()
Starguide: January 2018
Duration: 02:44
More clips from The Sky at Night
![]()
The Moon's Differing Faces
Duration: 00:45
![]()
Every Gram Counts
Duration: 01:03
![]()
The Astronaut Experience
Duration: 01:17
