In the 13th stage of that race Competition , he collapsed Motion and died Death during the ascent Self_motion of Mont Ventoux .

On that same day , an appalled Change_sentiment world witnessed a historic tragedy - the `` Challenger '' Space Shuttle disintegrated in mid-air while on its ascent into space .

The Long March began Process_start the ascent to power of Mao Zedong , whose leadership during the retreat Escaping gained Getting him the support Supporting of the members of the party .