This unique line of about 20 stars is known as ...
Orion's belt
Orion's sword
Ophiuchus
Kemble's cascade
It was named by in honour of Father Lucian Kemble (1922–1999), a Franciscan friar and amateur astronomer who wrote a letter to Houston about the asterism, describing it as "a beautiful cascade of faint stars tumbling from the northwest down to the open cluster NGC 1502" that he had discovered while sweeping the sky with a pair of 7×35 binoculars
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Answers by country
Orion's belt
Orion's sword
Ophiuchus
Kemble's cascade
answers
Australia
18
France
11
Republic of Ireland
16
Pakistan
14
Austria
42
the United Kingdom
53
Switzerland
22
the Philippines
15
Poland
2780
the United States
90
India
173
Germany
191