alpha Orionisとは 意味・読み方・使い方

固有名詞

Alpha Orionis

1. (astronomy) Synonym of Betelgeuse
   • 2007, Yuval Dolev, Time and Realism: Metaphysical and Antimetaphysical Perspectives, MIT Press, →ISBN, page 198:

     Thus, to take an example, a concert in Boston can be copresent with a soccer match in Sydney, but not with a soccer match on, say, Alpha Orionis: the present as it is defined relative to the soccer match extends some ninety light minutes into space, and so includes Sydney, but not Alpha Orionis, which is several hundred light years away.