Neptune's moon Nereid may be the sole survivor of the planet's original system, a new study suggests, challenging long-held beliefs. This revelation comes from a two-pronged approach: observations with the James Webb Space Telescope (JWST) and simulations of Neptune's early dynamics. The moon's distinct characteristics, such as its water ice content, brightness, and blue hue, set it apart from Kuiper Belt objects (KBOs), which were previously thought to be its origin. These findings not only rewrite the history of the Neptune system but also highlight the importance of timely scientific research, as the JWST's finite lifetime necessitates immediate exploration to secure valuable data for future generations.
