Are There Alien Asteroids in Our Midst?

Researchers have identified at least one asteroid from another sun that's been hanging out in our solar system for billions of years. Learn more in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/alien-asteroids-been-lurking-in-solar-system-since-beginning.htmSee omnystudio.com/listener for privacy information.