| | October 23 Hole-Punch Clouds | | | |
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| | |  Patricia Evans spotted this hole-punch cloud in 2015 from a restaurant parking lot. | | | Good morning! What are hole-punch clouds? | | Ever seen one of these? People sometimes report them as UFOs. They're called hole-punch clouds, and jets make 'em. The connection between hole-punch clouds, jets and snowfall, here. Read more. | | | | Astronomers spy 4 giant planets orbiting a young star | | Finding 4 giant planets orbiting another star isn't too unusual these days. But these massive planets are the largest known to orbit such a young star - CI Tau - only 2 million years old. Read more.  Artist's concept of 4 giant planets orbiting the star CI Tau, via Amanda Smith/Institute of Astronomy. | | | | | |
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| | | Venus is going, going … | Steven Bellavia wrote: "October 21 crescent Venus - 5 days before the planet's inferior conjunction, when it will go between the Earth and sun - at 1.6 percent illumination. At inferior conjunction, on October 26, Venus will be 0.6 percent illuminated." Read more. | | | | |
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| | Tonight … Waxing toward the full Hunter's Moon | Path of the 2016 Hunter's Moon above Fall River, Massachusetts, by Jacob Baker. This is a 16-shot composite, made of photos taken at 10-minute intervals over 2 1/2 hours. Read more. | | |