Posted on Jul 21, 2022
APOD: 2022 July 21 - Messier 10 and Comet
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Good evening, Rallypoint, and welcome to the July 21st Astronomy Picture of the Day (APOD): "Messier 10 and Comet." Messier 10 (aka M10 and NGC 6254) is a globular cluster of stars in the constellation Ophiuchus. Charles Messier discovered M10 on May 29, 1764, and noted it in his catalogue as a 'nebula without stars'. Using larger instrumentation, amateur astronomer Admiral William Henry Smyth (1788-1865) provides a more accurate description: "A rich globular cluster of compressed stars, on the Serpent-holder’s right hip. This noble phenomenon is of a lucid white tint, somewhat attenuated at the margin, and clustering to a blaze in the centre. It is so easily resolvable with very moderate means, that we are surprised at Messier’s remark, on registering it in 1764: ‘A beautiful round nebula. It may be seen, with attention, by a telescope of three feet in length.’"
Comet PanSTARRS was discovered in May 2017 when it was beyond the orbit of Saturn. This image was captured on July 15th, a day after the comet made its closest approach to Earth. PanSTARRS will make its closest approach to the Sun on December 19th.
Comet PanSTARRS was discovered in May 2017 when it was beyond the orbit of Saturn. This image was captured on July 15th, a day after the comet made its closest approach to Earth. PanSTARRS will make its closest approach to the Sun on December 19th.
APOD: 2022 July 21 - Messier 10 and Comet
Posted from apod.nasa.gov
Posted 2 y ago
Responses: 3
Posted 2 y ago
Thank You Sir for sharing this! We are in interesting times with the new technology and pictures being sent back to earth and those with strong Telescopes!!! Doc
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Posted 2 y ago
God was having a really great day when he designed that APOD sir Maj William W. 'Bill' Price
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