As the sun sets and the light starts to dim, some lucky onlookers may spot a rare, brief flash of emerald green. This is known as the ‘green flash’, which can sometimes be witnessed right ...

A man has shared the moment the sun appeared to flash green moments after it had set. Craig Hayslip, a research assistant at Oregon State University, caught the moment on camera in Bandon ...

When the sun's disk is disappearing at sunset, or appearing at sunrise, its top sometimes momentarily turns a brilliant green. The flash results from dispersion of sunlight in air ...