One of the assignments required using the ExoMy camera to take pictures of the target blue ball on the mock Martian surface ...

Here is what causes 'blue balls' - known medically as epididymal hypertension - as participants in No Nut November near the ...

A blue ball is thrown upward with an initial speed of $v_{b0}$, from a height of $y_{b0}$ meters above the ground. $t_r$ seconds after the blue ball is thrown, a red ...

The phenomenon even has its own medical term: epididymal hypertension. The discomfort you feel from blue balls is certainly real, but there are misconceptions about the condition. If you're ...