Watch Free Online on Hurawatch. Astronomers have located more than 1,000 planets orbiting stars other than our own, and the latest observations are starting to reveal what these planets are like. The AMNH-led Project 1640 is at the forefront of this research. The project’s advanced telescope instrumentation can spot chemical fingerprints that will help characterize how exoplanets form, evolve, and differ from familiar planets closer to home.