question #1 Sahih al-Bukhari 1235, Book 22, Hadith 13 : How did Aisha communicate the occurrence of a celestial event during prayer?

I went to `Aisha and she was standing praying and the people, too, were standing (praying). So I said,
“What is the matter with the people?” She beckoned with her head towards the sky.
I said, “(Is there) a sign?” She nodded intending to say, “Yes.”