hip-34579

Its story

In Canis Major shines a blue variable 1842 light-years away, whose light set out around the second century, when Ptolemy was compiling the «Almagest» in Alexandria — the foundation of Western astronomy for fifteen centuries. Its class B places it among young suns, and its brightness oscillates in fine pulses. It accompanies the celestial dog that eternally chases Orion through the southern winter.