Interstellar object - Wikipedia
An interstellar object is an astronomical object in interstellar space, not gravitationally bound to a star. The term is used for objects including some asteroids, some comets, and rogue planets, but not …
Interstellar object | Definition, Oumuamua, Borisov, & Facts | Britannica
Interstellar object, an object that has entered the solar system from interstellar space. Three such objects have been observed: ‘Oumuamua (discovered in 2017), Comet Borisov (discovered in 2019), …
We Have Visitors: Interstellar Material from Nearby Debris Disks
2 days ago · Traversing the galaxy from places yet known, a few interstellar objects have taken a quick dip into our solar system. Astronomers look to nearby planet-forming stellar systems as …
Interstellar Objects: What They Are and Why They're Rare
Oct 3, 2025 · Interstellar objects aren't just curiosities - they're direct samples of other solar systems. Unlike light from distant stars or exoplanet spectra, these are physical pieces of matter that formed …
NASA confirms that mysterious object shooting through the solar …
Jul 3, 2025 · NASA scientists have confirmed that a mysterious object shooting toward us through the solar system is an "interstellar object" — only the third of its kind ever seen. Experts have also …
'Oumuamua - NASA Science
Nov 13, 2025 · The first known interstellar object to visit our solar system, 1I/2017 U1 ‘Oumuamua, was discovered Oct. 19, 2017 by the University of Hawaii’s Pan-STARRS1 telescope, funded by …
Where are the interstellar objects 1I/'Oumuamua, 2I/Borisov and 3I ...
Aug 19, 2025 · 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 …
Interstellar comet 3I/ATLAS is spraying water across the solar system
Feb 11, 2026 · For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the third known interstellar comet ever spotted. When scientists …
Interstellar Object - Definition & Detailed Explanation - Astronomical ...
Oct 7, 2025 · Interstellar objects are celestial bodies that originate from outside our solar system and travel through interstellar space. These objects are not bound by the gravitational pull of any …
New interstellar object 3I/ATLAS: Everything we know about the rare ...
Jul 7, 2025 · How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here are all of your questions answered.