Mr Peake posted a view from a window of a return capsule, with stars racing by and a red glow.
He wrote on Twitter that the temperatures the capsules experiences is around 1900C (3452F).
He said: “This is the view during reentry, as temperatures outside reach around 1900C and g-loads build up to 4 or 5g.
“The atmosphere is essentially your air brake for several minutes.”
READ MORE: WATCH as SpaceX Crew Dragon makes dramatic splashdown in spectacular return to Earth