US EditionInterstellar Comet 3I/Atlas Enters Inner Solar System
- On July 1, 2025, astronomers detected 3I/ATLAS, marking the third confirmed interstellar visitor to pass through our solar system.
- The NASA-funded ATLAS survey detected the interstellar object on July 1, 2025, with Rubin Observatory and orbit calculations confirming its hyperbolic, interstellar trajectory.
- Measurements indicate the object is 12–20 km wide, travels at about 66 km/s, with an orbital eccentricity of 6.05 confirming its interstellar origin.
- Astronomers worldwide gear up for rapid observations as interstellar origin is confirmed within days, with the object currently 670 million km from Earth moving at ~60 km/s.
- ESA plans its Comet Interceptor mission, with the interstellar visitor expected to be observable early December, suggesting interstellar objects may become more common.
313 Articles
313 Articles
Mysterious Object Headed Into Our Solar System Is Coming From the Center of the Galaxy
Folks, it's official: the object that astronomers recently spotted blowing through the outer solar system came from interstellar space. Yesterday, the intriguing stranger was named A11pl3Z. Now, it's earned the esteemed designation 3I/ATLAS — that "I" standing for "interstellar." 3I/ATLAS is currently located between the orbits of the asteroid belt and Jupiter, the New York Times reports, where it's about 416 million miles away from the Sun, NA…
By Ashley Strickland, CNN A newly discovered object zipping through our solar system is generating excitement among astronomers because it's not from here. Believed to be a comet, it's only the third celestial body from outside our solar system observed in our region of the universe. This interstellar visitor, now officially named 3I/ATLAS, was spotted when the NASA-funded Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in Chile …
By Ashley Strickland, CNN A newly discovered object zipping through our solar system is generating excitement among astronomers because it's not from here. Believed to be a comet, it's only the third celestial body from outside our solar system observed in our region of the universe. This interstellar visitor, now officially named 3I/ATLAS, was spotted when the NASA-funded Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in Chile …
Astronomers spot 3rd object that is not from our solar system
Astronomers are excited after spotting an object speeding at 133,200 miles per hour (about 214,364 kilometres per hour), which is too fast to be from our solar system, CNN reported on Friday. The interstellar object is believed to be a comet, which astronomers from the European Space Agency have officially named 31/ATLAS (Asteroid Terrestrial-Impact Last Alert System), and is the third celestial… Source
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