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Title: Stunning Discovery of Comet C/2026 S1 (Euclidean) by Euclid Telescope
Introduction:
The comet C/2026 S1 (Euclidean) was recently captured in images taken by the Euclid telescope between September 16 and 24, 2026.
Body:
C/2026 S1 (Euclidean) is currently positioned approximately 1.3 billion km (800 million miles) away from Earth, a distance equivalent to the orbit span between Jupiter and Saturn. Traveling in an orbit that requires thousands of years to complete, the comet remains far above the planet’s surface. Ongoing observations will contribute to refining its orbital period.
This remarkable discovery was credited to Dr. Mikko Pontinen, a dedicated student at the University of Helsinki and a valued member of the Euclid Consortium’s Solar System Object Science Working Group. Dr. Pontinen shared his excitement upon detecting fast-moving objects through specialized software, eventually identifying C/2026 S1 in multiple image sets. The presence of a distinct hazy cloud surrounding the comet suggests active emissions of dust and gas.
The unexpected nature of this finding is highlighted by the fact that Euclid’s primary purpose is to study remote galaxies rather than objects within our solar system. The telescope typically steers clear of the planetary plane’s debris and only captures each portion of the sky once.
Dr. Bruno Altieri, Euclid Archive Scientist, acknowledged the rarity of comet discoveries through Euclid’s lens. However, the fortuitous alignment of the comet’s trajectory and Euclid’s scanning resulted in the repeated capture of this unique object. While C/2026 S1 may not be an ideal target for interception, the discovery serves as a valuable test scenario for future collaboration between mission teams.
Dr. Valeria Pettorino, Euclid Project Scientist, concluded with optimism regarding the comet’s unveiling, paving the way for further exploration within the solar system community.
Source: www.sci.news












