SpaceX has shared scant details about its newly announced plan to send private citizens on a trip around the moon late next year.

The company hasn’t disclosed the space tourists’ identities or said how much they’ll pay for the chance to buzz the moon and go far beyond before returning to Earth. Nor did SpaceX say exactly what training the tourists will undergo or how they will occupy themselves during the week or so between lift-off from Kennedy Space Center’s near Cape Canaveral, Florida and their return to Earth.