Three Known Interstellar Visitors to the Solar System: Implications for Planetary Formation and Rapid Probes
To the point
Interstellar objects that visit the Solar System are rare but reveal how planetary systems form, and experts Asa Stahl and Bruce Betts say that with future observatories and fast, small probes—including ESA’s 2029 comet mission and solar-sail concepts like LightSail—we could detect more of them and sample a visitor up close.
