Does the Pope have the authority to baptize aliens (martians)?

Does the Pope have the moral authority to baptize Martians? Or any power from the bible? This is the article: > Pope Francis says he would baptise aliens: 'Who are we to close doors?' Pontiff made the out-of-this-world pledge during homily on acceptance > Adam Withnall @adamwithnall Tuesday 13 May 2014 08:47 BST http://www.independent.co.uk/news/world/europe/pope-francis-says-he-would-baptise-aliens-9360632.html