4,000th Comet Discovered Using Digital Images Provided By NASA/ESA SOHO.
From my “Comets” book
(shown below).
Click to ENLARGE & read here.
The above two extracts from my “Comets” book tell you everything you need to know. SMILE.
NASA/ESA SOHO makes available digital images that amateurs can scan at their leisure to spot comets.
The 3,000th comet thus discovered was made in September 2015.
So just under 5-years to find another 1,000. That is 200 a year. NOT BAD.
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Check Category ‘astronomy’.