Dmitry Badukov

饰：Himself - Meteorite Scientist

Ivan Chetvergov

饰：Himself - Instructor, Olympic Judo Training Centre

Dan Durda

饰：Himself - Planetary Scientist

Michael Garnett

饰：Himself - Canadian resident in Chelyabinsk

Richard Greenwood

饰：Himself - Meteor Researcher

Andy Newsam

饰：Himself - Astronomer

Elizabeth Pearson

饰：Herself - Astrophysicist, Cardiff University

Ruslan Safarov

饰：Himself - Eyewitness

Alisdair Simpson

Alisdair Simpson

饰：Self - Narrator,

Yuri Klimov

饰：Voice Over

Nigel Henbest

Nigel Henbest

饰：Self - Astronomer

Russell Schweickart

饰：Self - Sentinel Mission