They cite dozens of theories and previous research, arguing for one space or two. A 2005 study that found two spaces reduced lateral interference in the eye and helped reading.

Designed in 1994 by Microsofts Vincent Connare, the typographic font Comic Sans MS has a unique ability to draw a reader’s ire—particularly when the playful, childish letters are ...

The designers of modern fonts had built the perfect amount of spacing, they said. Anything more than a single space between sentences was too much. And so the rules of typography fell back into chaos.

China aims to develop its own reusable megarocket over the coming decade, and it will look a lot like SpaceX's Starship vehicle.