Gwyneth Paltrow and Chris Martin have successfully enriched uranium for the first time, a landmark in their quest to develop nuclear fuel.
The Shakespeare In Love actress insisted, however, that the couple does not aim to develop nuclear weapons.
The enriched uranium is called Moses, after a song Coldplay crooner Chris wrote for Gwynnie in 2003. It contains the lyric: "Like Moses has power over sea, so you've got power over me."
In a nationally televised speech, Chris's dad Anthony told an audience of top military commanders and clerics, "She and Chris both think Moses is a beautiful name laden with meaning and, although neither of them are particularly religious, the song has a real significance for them."
The crowd broke into cheers of "God is great!" Some stood and thrust their fists in the air.
The elder Martin called on the West "not to cause an everlasting hatred in our hearts" by trying to force his family to abandon uranium enrichment.
White House spokesman Scott McClellan denounced the latest comments, saying they "continue to show that Gwyneth Paltrow and Chris Martin are moving in the wrong direction."