assalamu alaykum
Neil Armstrong never did such a thing... Nor did he or any astronaught hear the Azaan.
MEMRI is an Israeli Zionist Organisation which is created to try and make Muslims and Arabs look bad.
Videos from MEMRI, are actually Snippets of TV shows from Dumb Arab TV channels where they put anyone who calls himself a DR to say his words.
They take the most ridiculous things from these tv stations, (which unfortunately are a lot!) and then put them online.
Its all total nonsense and people should be careful who they are viewing or listening to.
It is important to be very careful and selective with any information garnered from the internet, media, or even Muslims and Muslim speakers etc
We should make sure that we learn from a reliable source, especially our Islamic information, fatawa etc must come from those known to be upon the Quran and sunnah, scholars, ulema who dedicated their lives to Islam - this does not include those who are merely speakers with the "Shaykh" tag attached before their name. It is important to do research on whom you listen to.