Give examples of the risks of space travel

Danger from impact damage to spacecraft or astronauts due to micrometeorites and space debris danger from ionising radiation that could cause cancer from solar flares and radiation there is no atmosphere in space but we need air to breathe and atmospheric pressure to stop our bodies from decompressing space's temperatures are too extreme for humans to survive without protection (around -150 to 120 degrees Celsius) on returning to Earth travelling fast creates high frictional forces and generates extremely high temperatures