Monica was watching the night sky. She saw a star , moving towards her, with increase in brightness. After some few minutes when she watched closely, she found it was the light from a flight in the sky. Whe was surprised, but initially the flight looked stationary, after soem time it was glowing brightly miving towards her. So she went and asked her father. Why this effect occured?

Explanation

Any moving object, which is perpendicular to our eyes sight will look like a stationary thing for a while. But as the moving object chagnes its angle of vision, its movement will be known.