"Flying stars" at night are not a real astronomical phenomenon. It's likely you're referring to shooting stars, also known as meteors.

Here's what they are:

* Meteors are small particles of dust and debris that enter Earth's atmosphere at high speeds.

* The friction created by the air causes the particles to heat up and glow, creating the streak of light we see.

* Shooting stars are not stars at all, but rather these burning particles of debris.

Why are they called "flying stars"?

The term "flying stars" might be used poetically to describe the bright, fast-moving streaks of light. They are not actually stars, but the nickname is a way to describe their appearance.

Let me know if you have any other questions about astronomy or space!