Which comet appears after every 76 years?

Options

A. Halley comet
B. Braille comet
C. Both
D. None of these

Explanation

**Step-by-Step Solution:**

1. **Understanding Comets**: Comets are celestial objects made of ice, dust, and rocky material that orbit the Sun. They have distinct orbits and can be visible from Earth when they come close to the Sun.

2. **Identifying the Comet**: The question asks for a specific comet that appears every 76 years. The most famous comet fitting this description is Halley's Comet.

3. **Historical Context**: Halley's Comet was discovered by Edmond Halley in 1682. It has been observed multiple times since its discovery.

4. **Orbital Period**: Halley's Comet has an orbital period of approximately 76 years. This means it returns to the vicinity of the Sun roughly every 76 years.

5. **Past Appearances**: The comet has been recorded in the following years:
- 1682 (discovered by Edmond Halley)
- 1758
- 1835
- 1910
- 1986

6. **Next Appearance**: After its last appearance in 1986, Halley's Comet is expected to return in 2062.

7. **Conclusion**: Therefore, the comet that appears every 76 years is Halley's Comet.

**Final Answer**: Halley's Comet.

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