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Question 3 of 5:
What decision did the International Astronomical Union make in August 2006?

A. To sue The New York Times for making false claims
B. To downgrade Pluto from planet to dwarf planet
C. To withdraw their support of Dr. Tyson's exhibit
D. To fire Dr. Tyson as director of the planetarium



Answer :

GinnyAnswer

Final answer:

The International Astronomical Union downgraded Pluto from a planet to a dwarf planet in 2006 based on specific criteria, sparking mixed reactions among astronomers and the public.


Explanation:

The International Astronomical Union (IAU) decided in 2006 to downgrade Pluto from a planet to a dwarf planet. This decision was based on three criteria set by the IAU to define a planet, which Pluto did not fully meet. The three criteria are:

  1. Orbit a star (in our case, the Sun)
  2. Be large enough to have a spherical shape due to gravity
  3. Have cleared its orbit of other objects of similar size

Pluto's classification change from a planet to a dwarf planet was met with mixed reactions from astronomers and the public.


Learn more about Pluto's reclassification by the International Astronomical Union here:

https://brainly.com/question/36732393


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