[/caption] The small southern constellation of Triangulum Australe was first introduced in 1589 by Petrus Plancius on a celestial globe which was later added to Johann Bayer’s atlas – Uranometria – in 1603. The constellation, then named “Triangul Australe” was later adopted by the IAU as a member of the 88 modern constellations. It spans … Continue reading "Triangulum Australe"