Interstellar Comet's Carbon Dioxide Shroud Stuns Astronomers

On July 1, 2025, the skies above Chile were a stage for cosmic discovery as the Deep Random Survey remote telescope, an integral component of the ATLAS project, captured the astonishing presence of comet 3I/ATLAS. Unlike any ordinary comet, this wanderer isn’t tethered by our sun’s pull – it hails from the enigmas of another star system.

A Cosmic Visitor

3I/ATLAS, the third known interstellar object to grace our solar system, is not just any ordinary drifter. It’s a behemoth of light and size, capturing the fascination of scientists worldwide. Armed with NASA’s cutting-edge SPHEREx observatory, researchers found themselves unraveling 3I/ATLAS’s secrets, layer by ethereal layer.

Carbon Dioxide Cloak

In an enthralling revelation, SPHEREx discovered that 3I/ATLAS is enveloped in an opulent carbon dioxide fog, much like its cometary relatives here at home. This discovery is a poignant reminder that despite its interstellar origin, 3I/ATLAS holds a mirror to comets birthed by our solar system, weaving strands of commonality across the cosmic quilt.

The Science of Ice and Fire

Comets are intricate tapestries woven with rocky dust and icy elements such as water, carbon dioxide, and carbon monoxide. Each comet’s story is etched by the temperatures where it formed. 3I/ATLAS, devoid of carbon monoxide, presents itself as a well-traveled veteran – roasted and extracted from its distant genesis, now journeying through the star-studded expanse.

SPHEREx’s Stellar Insights

SPHEREx’s prowess lies in its chromatic prowess, presenting a kaleidoscope of celestial colors across the sky. According to Space. From the distant galaxies beyond our gaze to nearby stars and wayfaring comets, the observatory unlocks the universe’s encrypted secrets, fueling discoveries that traverse the astronomical community.

A Cosmic Farewell

As October unfolds, 3I/ATLAS will grace us with its closest encounter with the sun, skimming the red, dusty realm of Mars. As this happens, the comet is predicted to shed its icy layers, awakening an even grander visage for SPHEREx and intently watching spacecraft to marvel upon.

SPHEREx’s invaluable contributions continue to chart new terrains of cosmic knowledge, ensuring the spirit of discovery is an undying flame flickering across the black canvas of space. With each scan of the skies, SPHEREx paints a mosaic of knowledge, connecting the celestial dots of our vast universe.