christian aliens?

Stepping outside the boundaries of "the stuff of earth" for a moment to look beyond our planet, a Catholic astronomer has recently suggested that there could be aliens on other planets, and that these aliens would be subject to Christ's saving grace. This affirmation is based on a thoroughly scientific exegesis of John 10:14-16: "I am the Good Shepherd . . . I have other sheep that do not belong to this fold. I must bring them also, and they will listen to My voice. So there will be one flock, one Shepherd." Hmmm... (HT: CT)