The eerie red ring that stunned an Italian hillside town The new image that set social media buzzing shows a perfect, glowing circle of red light hovering above the hills near the town of Possagno in ...
Astronomers have found an enormous halo of stars bound to the Andromeda galaxy and extending far beyond the swirling disk seen in images of the famous galaxy, our nearest large galactic neighbor. The ...
An e-mail asks about the spots of colored light and halos sometimes seen in thin clouds and how that differs from rainbows. Although ice crystals in those high, thin clouds disperse light in the same ...
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