“Webb is really tuned to seeing the infrared wavelengths of light beyond what Hubble can pick up, but Webb cannot see the visible light and the ultraviolet light that Hubble can see, and we need all of those wavelengths of light for studying almost anything ― whether that’s planets, exoplanets, star systems, galaxies, the interstellar medium or cosmology,” Wiseman said. “So many proposals from scientists now involve both Hubble and Webb, because they are crucial partners for addressing some of the hottest topics in astrophysics.”