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The planet whose relevancy as a planet h...

The planet whose relevancy as a planet has been ended at Prague Summit of IAU in:

A

Uranus

B

Pluto

C

Mars

D

Neptune

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Event**: The question refers to a significant event that took place at the Prague Summit of the International Astronomical Union (IAU). This event involved the redefinition of what constitutes a planet. 2. **Determine the Planet in Question**: The planet that had its status changed during this event is Pluto. Prior to this redefinition, Pluto was considered the ninth planet in our solar system. 3. **Understand the Reason for Downgrade**: The IAU established specific criteria for classifying a celestial body as a planet. One of the main criteria is that a planet must have "cleared the neighborhood around its orbit." Pluto does not meet this criterion because it shares its orbital zone with other objects of similar size. 4. **Conclusion**: As a result of not meeting the IAU's criteria, Pluto was reclassified from a planet to a "dwarf planet" at the Prague Summit in 2006. **Final Answer**: The planet whose relevancy as a planet has ended at the Prague Summit of IAU is Pluto. ---
**Step-by-Step Solution:** 1. **Identify the Event**: The question refers to a significant event that took place at the Prague Summit of the International Astronomical Union (IAU). This event involved the redefinition of what constitutes a planet. 2. **Determine the Planet in Question**: The planet that had its status changed during this event is Pluto. Prior to this redefinition, Pluto was considered the ninth planet in our solar system. 3. **Understand the Reason for Downgrade**: The IAU established specific criteria for classifying a celestial body as a planet. One of the main criteria is that a planet must have "cleared the neighborhood around its orbit." Pluto does not meet this criterion because it shares its orbital zone with other objects of similar size. ...
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