Retractable heat source for aerosol generating article

An aerosol generating article having a proximal end and a distal end, comprising:

• a tubular body positioned at the proximal end of the aerosol generating article and extending toward the distal end;
• a combustible heat source positioned at the distal end of the aerosol generating article, wherein the combustible heat source is a carbonaceous heat source;
• and
• an aerosol-forming substrate downstream of, and separate from, the combustible heat source;
• the combustible heat source is slideable from an extended position having a first article length to a retracted position having a second article length that is less than the first article length in response to force applied to the combustible heat source in a direction along a longitudinal axis of the combustible heat source and the entire length of the combustible heat source retracts into the tubular body in the retracted position.