NASA's New Horizons spacecraft, after its close flyby of Arrokoth in 2019, has detected high dust levels, suggesting an extended Kuiper Belt or a possible second one.
Ground-based telescopes are searching for additional Kuiper Belt Objects (KBOs) for New Horizons to explore, reinforcing the idea of a larger Kuiper Belt.
Scientists plan to use the upcoming Vera Rubin Observatory and NASA's Roman Space Telescope to continue the search for a new flyby target in the late 2020s or 2030s.
New Horizons has enough fuel and power to operate until the 2040s and is expected to cross the termination shock, reaching interstellar space in the near future.