Sirius, the brightest star in the Earth's night sky. Sirius is found in the constellation 'Canis Major'.
IMAGE: By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) - individual constellation chart of Canis Major from IAU (International Astronomical Union) website, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=15406243