Singularity Orbit | Edge of Science on Instagram: "Sirius — the brightest star visible in Earth’s night sky — often appears to flicker between red, blue, and green when observed through a telescope. But here’s the scientifically proven truth: Sirius never changes its color. What you’re witnessing is an atmospheric optical illusion. As light from Sirius travels through Earth’s atmosphere, it passes through constantly shifting layers of air with different temperatures and densities. This atmospher