Material from Alpha Centauri is Already Here

Artist's impression of  `Oumuamua. While large ISOs like this grab our attention, dust particles from other star systems are also interstellar objects. Credit: ESO/M. Kornmesser

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 … Read more