The appearance of the interstellar objects (ISOs) ‘Oumuamua and Comet Borisov in 2017 and 2019, respectively, created a surge of interest. What were they? Where did they come from? Unfortunately, they didn’t stick around and wouldn’t cooperate with our efforts to study them in detail. Regardless, they showed us something: Milky Way objects are moving around the galaxy. The appearance of the interstellar objects (ISOs) ‘Oumuamua and Comet Borisov in 2017 and 2019, respectively, created a surge of interest. What were they? Where did they come from? Unfortunately, they didn’t stick around and wouldn’t cooperate with our efforts to study them in detail. Regardless, they showed us something: Milky Way objects are moving around the galaxy. Planetary Sciences Phys.org – latest science and technology news stories
Interstellar visitors: Material from Alpha Centauri may already be here
![Interstellar visitors: Material from Alpha Centauri may already be here](https://scx1.b-cdn.net/csz/news/tmb/2025/material-from-alpha-ce.jpg)