Fallings star are

Options

A. Comets
B. Asteroids
C. Meteors
D. Satellites.

Answer

**Step-by-Step Solution:**

1. **Understanding the term "falling star":**
- The term "falling star" is commonly used to refer to a specific astronomical phenomenon.

2. **Identifying the options:**
- The options given are: comets, asteroids, meteors, and satellites.

3. **Defining each option:**
- **Comets:** These are cosmic bodies made of ice, dust, and rocky material that orbit the sun. They often have a tail when they come close to the sun due to the sublimation of their icy components.
- **Asteroids:** These are small, rocky objects that also orbit the sun, primarily found in the asteroid belt between Mars and Jupiter.
- **Meteors:** These are small bodies from outer space that enter the Earth's atmosphere. When they do so, they become incandescent due to friction with the atmosphere and appear as streaks of light.
- **Satellites:** These are objects that orbit planets. For example, the Earth has one natural satellite (the Moon), while other planets have varying numbers of moons.

4. **Analyzing the correct answer:**
- The description of a "falling star" aligns with the definition of a meteor, as it is specifically a small body that becomes visible as a streak of light when it enters the Earth's atmosphere.

5. **Conclusion:**
- Therefore, the correct answer to the question "Falling stars are" is **meteors**.