Interstellar objects as a research area focus on the detection, characterization, and dynamical analysis of solid bodies that originate outside a planetary system and traverse or enter another, such as the Solar System. This field integrates observational astronomy, celestial mechanics, planetary science, and astrochemistry to constrain their trajectories, compositions, sizes, shapes, rotational states, and possible formation environments. Research investigates their implications for planetesimal formation, mass loss from planetary systems, galactic dynamical processes, and the transfer of material between stellar systems, as well as optimizing observational strategies and instrumentation for their rapid identification and follow-up before they exit observational reach.
Southwest Research Institute (SwRI) has completed a mission study detailing how a proposed spacecraft could fly by an interstellar comet, providing remarkable insights into the properties of bodies originating beyond our ...
Space Exploration
Sep 3, 2025
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The recent discovery of the third known interstellar object (ISO), 3I/ATLAS, has brought about another round of debate on whether these objects could potentially be technological in origin. Everything from random YouTube ...
Astrobiology
Sep 1, 2025
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All (or at least most) astronomical eyes are on 3I/ATLAS, our most recent interstellar visitor that was discovered in early July. Given its relatively short observational window in our solar system, and especially its impending ...
Astronomy
Sep 1, 2025
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One of the advantages of having so many telescopes watching large parts of the sky is that, if astronomers find something interesting, there are probably images of it from before it was officially discovered sitting in the ...
Astronomy
Aug 28, 2025
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The ambitious mission to retrieve samples from asteroid Bennu and return them to Earth is paying off. Just as scientists had hoped, the asteroid is revealing details about the early days of our solar system. More than just ...
Astronomy
Aug 28, 2025
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In the past decade, astronomers have witnessed three interstellar objects (ISOs) passing through the solar system. These include the enigmatic 'Oumuamua in 2017, the interstellar comet 2I/Borisov in 2019, and 3I/ATLAS in ...
Astronomy
Aug 19, 2025
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Astronomers using the Hubble Space Telescope have observed 3I/ATLAS, only the third known object from outside our solar system to visit our neighborhood. This interstellar interloper is putting on quite a show as it approaches ...
Astronomy
Aug 11, 2025
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The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another star.
Astronomy
Aug 7, 2025
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A team of astronomers has taken the sharpest-ever picture of the unexpected interstellar comet 3I/ATLAS using the crisp vision of NASA's Hubble Space Telescope. Hubble is one of many missions across NASA's fleet of space ...
Astronomy
Aug 7, 2025
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100
Since 2017, three interstellar objects have been spotted passing through our solar system: 1I/ʻOumuamua, 2I/Borisov… and just this month, 3I/ATLAS. Discovered on July 1 by the Asteroid Terrestrial-Impact Last Alert Survey, ...
Planetary Sciences
Aug 4, 2025
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