On November 24, 2015, a mysterious cloud appeared in the US sky and baffled stargazers looking for Comet Catalina.
The following pictures feature what happened in the sky of Japan when the rocket responsible for this weird US cloud launched: A kind of iridescent noctilucent cloud. Awesome.
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Watch more pictures of this incredible and mystery iridescent cloud over Japan and learn more about the launch of this rocket here.