ESA’s Juice Spacecraft Captures Stunning Images of Comet 3I/ATLAS in 2025
December 5, 2025
ESA’s Jupiter Icy Moons Explorer, known as Juice, recently captured striking new images and data of Comet 3I/ATLAS. In November 2025, the spacecraft used five scientific instruments to study the comet, helping scientists learn about its activity, shape, and composition. Juice’s Navigation Camera, NavCam, gave an early visual of the comet, showing its rough shape and surface features.
Juice was meant to explore Jupiter’s moons, but it turned its attention to the comet as it neared the spacecraft. The closest approach was on 4 November 2025, at about 66 million kilometres. Although detailed data will reach Earth only by February 2026, scientists released a part of a NavCam image early. This picture showed the comet clearly with a bright glowing gas cloud around it called a coma, plus two distinct tails. The plasma tail of charged gas points upward, and the dust tail made of tiny particles stretches downward.
These tails appear because the comet is active after passing close to the Sun. Scientists expect more detailed information soon on the comet’s gas, dust, and molecules from Juice’s five instruments: JANUS (high-res camera), MAJIS (spectrometer), UVS (ultraviolet spectrometer), SWI (sub-millimetre wave instrument), and PEP (particle analyser).
Data transmission is slow because Juice’s main antenna is used as a heat shield, so it sends information via a smaller antenna. This limits the speed and delays full data to mid-February 2026.
The early NavCam images already excite scientists. The bright coma and two tails show the comet is very active. Juice’s work reveals how even navigation tools can deliver valuable science. These findings will help unravel how comets behave and interact with the Sun’s environment.
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Esa
Juice
Comet 3i/atlas
Space exploration
Navcam
Spacecraft Instruments
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