<P> Howard anticipated difficulty in portraying weightlessness in a realistic manner . He discussed this with Steven Spielberg , who suggested using a KC - 135 airplane , which can be flown in such a way as to create about 23 seconds of weightlessness , a method NASA has always used to train its astronauts for space flight . Howard obtained NASA 's permission and assistance in filming in the realistic conditions aboard multiple KC - 135 flights . </P>
<P> Howard anticipated difficulty in portraying weightlessness in a realistic manner . He discussed this with Steven Spielberg , who suggested using a KC - 135 airplane , which can be flown in such a way as to create about 23 seconds of weightlessness , a method NASA has always used to train its astronauts for space flight . Howard obtained NASA 's permission and assistance in filming in the realistic conditions aboard multiple KC - 135 flights . </P>
how did they film zero gravity in apollo 13
how did they film zero gravity in apollo 13
a KC - 135 airplane , which can be flown in such a way as to create about 23 seconds of weightlessness , a method NASA has always used to train its astronauts for space flight
a KC - 135 airplane , which can be flown in such a way as to create about 23 seconds of weightlessness , a method NASA has always used to train its astronauts for space flight