Neptune's moon Nereid might be the only satellite surviving from the planet's original system, researchers report in a new study.

Where did Neptune's mysterious moon Nereid come from? It may be the only survivor of the planet's violent history

Source: space
Source Link: https://www.space.com/astronomy/neptune/where-did-neptunes-mysterious-moon-nereid-come-from-it-may-be-the-only-survivor-of-the-planets-violent-history