Interplanetary Religious Competition

Usually when we conceptualize religious competition, we think of local markets.  Denominations export missionaries to foreign markets to proselytize, for example.  This leads to competition in a local market, but two denominations competing in one local market may also compete with each other in a market in a different location.  An example might be Seventh-day Adventists and Jehovah's Witnesses competing for converts in a town in Brazil and in a town in Cote d'Ivoire.

But can you imagine competing in different planets?  Why not?  Pope Francis has just stated that he would be willing to baptise aliens - even Martians.  He said: "who are we to close the doors."   See article here.  Actually, this is not the first time that baptizing extra-terrestrial beings has been mentioned by a Pope.  Pope Benedict XVI apparently once said that he would baptize an alien if the alien asked to be baptized.