Is a blessing recited upon seeing a solar or lunar eclipse?<a href="#_ftn1" name="_ftnref1">[1]</a>
No.<a href="#_ftn2" name="_ftnref2">[2]</a> One is not to say any blessing, including the blessing of Oseh Maaseh Bereishis.
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<a href="#_ftnref1" name="_ftn1">[1]</a> Igros Kodesh 15:260 [printed in Shulchan Menachem 1:355]; Orchos Rabbeinu p. 95
<a href="#_ftnref2" name="_ftn2">[2]</a> The reason: The Sages never established a blessing for an eclipse. No Poskim record that a blessing should be recited for an eclipse. Seemingly, the reason the Sages did not establish a blessing for an eclipse is because it is a bad omen, and requires prayer to nullify it and not a blessing. [Igros Kodesh ibid]

Shulchan Aruch HaRav | Is a blessing recited upon seeing an eclipse?

Is a blessing recited upon seeing a solar or lunar eclipse?[1] No.[2] One is not to say any blessing, including the blessing of Oseh Maaseh Bereishis. __________________________________________ [1] Igros Kodesh 15:260 ; Orchos Rabbeinu p. 95 [2] The reason: The Sages never established a blessing for