"This is a beautiful and symbolic gesture that creates a link between our father's presence on this planet, his wish to go into space, and his explorations of the universe in his mind," Hawking's daughter Lucy said.
While the music and Hawking's voice will reach a distant solar system, on Earth his ashes have strong scientific company. They were laid to rest next to the graves of Sir Isaac Newton and Charles Darwin in Scientists' Corner, a part of Westminster Abbey dedicated to those who made significant breakthroughs.
The memorial stone on his grave includes his equation that describes the entropy of a black hole, along with an image of one and an inscription reading, "Here lies what was mortal of Stephen Hawking."
His remains headed to the final frontier...literally.