The phenomenon you described could potentially be attributed to several factors, one of which is the observation of a satellite. Satellites are man-made objects that orbit the Earth, and they can appear as bright points of light moving across the sky. Here are a few possible explanations for what you observed:
Satellite: Many satellites are visible from the ground, especially during the early evening or pre-dawn hours when the Sun's rays reflect off their surfaces, making them appear as bright objects moving across the sky. Satellites can move quickly and may suddenly disappear from view when they enter the Earth's shadow or move into a region where they are no longer reflecting sunlight towards your location.
Space debris: There is a considerable amount of space debris, including defunct satellites, spent rocket stages, and other fragments, in orbit around the Earth. These objects can also appear as points of light and exhibit similar motion patterns to satellites. However, they may be less predictable in their behavior and can sometimes enter the Earth's atmosphere, resulting in their disappearance.
Meteor or fireball: Occasionally, you may observe a meteor or a fireball streaking across the sky. Meteors are small particles or debris entering the Earth's atmosphere and burning up due to friction, creating a brief but intense streak of light. If what you witnessed was a meteor, it would have appeared as a fast-moving point of light that vanished abruptly as it burned up completely.
It's worth noting that without more specific information about the location, time, and other characteristics of the event you observed, it can be challenging to provide a definitive explanation. If you regularly observe the night sky and encounter similar phenomena, you may find it interesting to keep a record of your observations, noting the time, location, and any additional details. This information can be helpful in identifying specific objects or events and distinguishing them from one another.