Aldrin joined him 19 minutes later, and they spent about two and a quarter hours together exploring the site they had named Tranquility Base upon landing.
ˈɔːldɹɪn dʒˈɔɪnd hˌɪm nˈaɪntiːn mˈɪnɪts lˈeɪɾɚ, ænd ðeɪ spˈɛnt ɐbˌaʊt tˈuː ænd ɐ kwˈɔːɹɾɚɹ ˈaʊɚz təɡˌɛðɚɹ ɛksplˈoːɹɪŋ ðə sˈaɪt ðeɪ hæd nˈeɪmd tɹæŋkwˈɪlᵻɾi bˈeɪs əpˌɑːn lˈændɪŋ.