The first interstellar object , ‘ Oumuamua , was discovered in the Solar System by Pan-STARRS in 2017 , allowing for a calibration of the impact rate of interstellar meteors of its size \sim 100 m. The discovery of CNEOS 2014-01-08 allowed for a calibration of the impact rate of interstellar meteors of its size \sim 1 m. Analysis of interstellar dust grains have allowed for calibrations of the impact rate of smaller interstellar meteors down to the size \sim 10 ^ { -8 } m. We analyze the size distribution of interstellar meteors , finding that for smooth power-law fits of the form N ( r ) \propto r ^ { - q } , the possible values of q are in the range 3.41 \pm 0.17 .
We then consider the possibility of analyzing interstellar meteors to learn about their parent planetary systems .
We propose a strategy for determining the orbits and chemical compositions of interstellar meteors , using a network of \sim 600 all-sky camera systems to track and conduct remote spectroscopy on meteors larger than \sim 5 cm once every few years .
It should also be possible to retrieve meteorites from the impact sites , providing the first samples of materials from other planetary systems .