Tech
A Comet From Another Star: JUICE Captures Stunning Images of 3I/ATLAS
Interstellar visitor comet 3I/Atlas may have faded from Earth’s view, but spacecraft traveling through the solar system continue to observe this mysterious traveler. The European Space Agency’s (ESA) Jupiter mission, JUICE, recently captured detailed images of the comet shortly after its closest approach to the Sun.
What Makes 3I/ATLAS Special?
Astronomers first spotted comet 3I/Atlas in June 2025, using data from the Asteroid Terrestrial-impact Last Alert System (ATLAS). The International Astronomical Union’s Minor Planet Center later confirmed that this comet originated from outside our solar system, making it only the third interstellar object ever discovered. These interstellar comets are rare and offer scientists a unique opportunity to study the composition of star systems beyond our own.
JUICE’s Close Encounter
JUICE, short for JUpiter ICy moons Explorer, used its JANUS camera to capture over 120 images of comet 3I/Atlas on November 6, 2025. This was just seven days after the comet reached its closest point to the Sun. At the time, JUICE was approximately 66 million kilometers away from the comet.
The images reveal a bright halo of gas, known as the coma, surrounding the comet’s nucleus. A long tail stretches out into space, displaying hints of jets, rays, filaments, and streams. The spacecraft utilized five of its instruments – JANUS, MAJIS, SWI, PEP, and UVS – to gather data on the comet’s behavior and composition.
Data Analysis and Future Discoveries
Scientists at ESA are currently analyzing the data collected by JUICE. The agency plans to discuss its findings in late March. The data transmission was delayed due to the Sun being between JUICE and Earth, forcing the spacecraft to use its high-gain antenna as a heat shield and a slower medium-gain antenna for data transfer.
JUICE’s Broader Mission
Launched in April 2023, JUICE is primarily designed to study Jupiter’s icy moons for potential habitability. Although en route to the Jovian system (expected arrival in 2031), JUICE is taking advantage of opportunities to observe other celestial objects, like 3I/ATLAS. This unexpected encounter demonstrates the value of long-duration space missions and their ability to contribute to a wider range of scientific discoveries.
Frequently Asked Questions
- What is an interstellar comet?
- An interstellar comet is a comet that originates from outside our solar system.
- What is the JUICE mission?
- JUICE (JUpiter ICy moons Explorer) is an ESA mission to study Jupiter’s icy moons.
- When did JUICE capture images of 3I/ATLAS?
- JUICE captured images of 3I/ATLAS on November 6, 2025.
Pro Tip: Keep an eye on ESA’s website for updates on the analysis of the 3I/ATLAS data. You can find more information about the JUICE mission here.
What are your thoughts on this interstellar visitor? Share your comments below!
