Before and After

Step 1
Save these pictures:
http://www.flickr.com/photos/hubble-heritage/5637819026/sizes/m/in/photostream/
http://www.flickr.com/photos/8768727@N03/6470407323/sizes/z/in/photostream/

Step 2
Go to Edit >> Define Pattern on the picture of the hands.

Step 3
Copy the picture of the galaxy.

Step 4
Paste it on the picture of the hands and using the Clone Stamp Tool with my settings, erase away the background so that only the galaxy is in the hands.