Science

How much of the solar system is made of interstellar stuff?


Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of “Ask a Spaceman” and “Space Radio,” and author of “How to Die in Space.” Sutter contributed this article to Space.com’s Expert Voices: Op-Ed & Insights.

The detection of interstellar objects in the solar system has raised an interesting question: How much of the solar system is made of foreign material? New research finds that the answer is … not much at all.




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