Main content
What is the Oort Cloud?
Prof Monica Grady tells Melvyn Bragg about the "shell of icy bodies" which scientists believe surrounds the Solar System.
Duration:
This clip is from
More clips from In Our Time
![]()
In Our Time Trailer (short)
Duration: 00:30
![]()
'It remains shocking today'
Duration: 01:16
![]()
'Romeo is slightly ridiculous in the early scenes'
Duration: 02:10
