Those bumps are convection cells in the Sun's photosphere, called "granules"[1]. They roughly 2/3rds the east-west length of the US: Richmond, Virginia to Phoen

Those bumps are convection cells in the Sun's photosphere, called "granules"[1]. They roughly 2/3rds the east-west length of the US: Richmond, Virginia to Phoenix, Arizona. 1 https://en.wikipedia.org/wiki/Solar_granule https://en.wikipedia.org/wiki/Solar_granule