"For the first time, we are not only visualizing the detailed structure of our Local Supercluster of galaxies, but we are also seeing how the structure developed over the history of the universe."
The radiant point for this week's Geminid meteor shower - possibly 2017's most spectacular meteor shower - is in the east in mid-evening or overhead by about 2 a.m.
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If you gaze along a railroad track, you see the illusion of parallel tracks converging in the distance. Like railroad tracks, meteors enter Earth’s atmosphere on parallel paths, and they appear to converge at a single point on our sky’s dome. This is the shower’s radiant point.
"When phytoplankton come near the beach, you can see this amazing scene. There is light in the sea and sky," said Mohammad Rouhbakhsh of Iran, who captured this image on December 1.
