Comet 3I/ATLAS lights up the sky with carbon glow, and a ‘missing’ tail

09 Nov 2025 | Category: Science

Having just passed perihelion — its closest approach to the sun — comet 3I/ATLAS has re-emerged from behind the sun, offering astronomers a rare glimpse of its unusual composition and structure.

Comets develop a diffuse atmosphere, or coma, as they approach the sun. Solar radiation heats their icy cores, causing the frozen material to sublimate into gas and dust, which then glows as it expands outward. When observed through a green filter, c...

🔗 Read More at Original Source