Help a man who helps everyone else

I am raising money for one of the best people I know, he is kind and generous and does anything he can for other people. His name is Jack, originally from London, he volunteers when and where he can helping out at stores and giving money to charities whenever he gets paid and has done for years. My main plan here is to try and do something for Jack and send him to America as it's the one thing he has always wanted to do. He is a rather large space fanatic and I would love to take him to Cape Canaveral to see the Nasal museum as I know that's something he really wants to do. If you could help that would be fantastic, anything raised towards this can help us fund this for this amazing man.