The phenomenon you described of seeing a star-like point of light moving quickly and then suddenly disappearing is likely due to the observation of a satellite. Satellites orbiting the Earth can appear as bright, moving objects in the night sky.
Here are a few key factors that contribute to this phenomenon:
Satellite Motion: Satellites are in orbit around the Earth and move across the sky relatively quickly compared to stars, which appear fixed due to their enormous distance from us. The speed of the satellite, combined with its altitude and orbital path, can cause it to appear as a fast-moving point of light.
Sunlight Reflection: Satellites are typically made up of reflective materials, and as they pass through sunlight in orbit, they can reflect sunlight towards the Earth, making them appear as bright objects in the night sky.
Disappearance: The sudden disappearance of the satellite's light can occur when it enters the Earth's shadow or moves into an area where it can no longer reflect sunlight towards the observer. This can cause the satellite to seemingly vanish from view.
It's important to note that there are thousands of satellites orbiting the Earth, including those used for communication, weather monitoring, and scientific purposes. Many of these satellites are visible to the naked eye under the right conditions.
If you observe similar phenomena in the future, it is likely that you are observing a satellite. There are several websites and smartphone applications available that can help identify satellites and provide information about their visibility at specific locations and times.