'Around 1610 Galileo determined the sun's rotational rate by watching these dark areas shift position'
Sunspots
SUN POTPOURRI: Around 1610 Galileo determined the suns rotational rate by watching these dark areas shift position
Around 1610 Galileo determined the sun's rotational rate by watching these dark areas shift position
Around 1610 Galileo determined the sun's rotational rate by watching these dark areas shift position
SUN POTPOURRI
Sunspots
SUN POTPOURRI