This user is a member of WikiProject Spaceflight.

Add this userbox to your userpage with:

((Wikipedia:WikiProject Spaceflight/UserboxU1))

and your userpage will be listed in Category:WikiProject Spaceflight participants.

If you choose to place the userbox on a sub-page of your userpage, and wish to be added to the category, add it with:

((Wikipedia:WikiProject Spaceflight/Userbox|addsubpage=yes))