We will be reading Saturn Run by John Sanford. Thank you to Andrea Wallace for the suggestion!
Summary from the author's website: "The year is 2066. A Caltech intern inadvertently notices an anomaly from a space telescope — something is approaching Saturn, and decelerating. Space objects don't decelerate. Spaceships do. The race is on, and an remarkable adventure begins — an epic tale of courage, treachery, resourcefulness, secrets, surprises, and astonishing human and technological discovery, as the members of a hastily thrown-together crew find their strength and wits tested against adversaries both of this earth and beyond."
Everyone will be responsible for their own check at the restaurant.