So, for this I would use generative fill in Firefly or in Adobe Photoshop.
First, I selected the background,
and changed it to look like you are on a space ship:
Then I selected the clothes and changed them to a space suit:
and then I selected around the head and prompted for a white space helmet. I did not select the whole head as when I did that, it replaced the face with a random person. I selected a wide selection around the face and to where the helmet would connect to the space suit.