'Some of the cracks had penetrated through': Chinese astronauts reveal new details about spacecraft that 'stranded' them in space last year

Three men in blue flight suits salute behind a wooden desk covered in microphones.

It has been billed as China's first emergency operation in the country's human spaceflight program. The three astronauts (or taikonauts) of China's Shenzhou-20 mission were originally slated to return to Earth last Nov. 5, but after discovering cracks in the viewport of their spacecraft, their landing was postponed.