Discuss the discovery of “Planet Nine” — why astronomers think it exists, what it’s orbit appears to be like, the expected characteristics of the planet, and how and why astronomers have come to these conclusions.

435:W7F(250 words)

Choose one of the following topics to discuss:

Discuss the Kuiper Belt, including the theories by Edgeworth and Kuiper, the discovery of objects, what we know about the Belt, and what mysteries remain.

or

Discuss the Oort Cloud, including the current theories about its structure and what we know about it at present.

or

Discuss the New Horizons mission, including what it’s discovered so far and what the future holds for the spacecraft.

or

Discuss the discovery of “Planet Nine” — why astronomers think it exists, what it’s orbit appears to be like, the expected characteristics of the planet, and how and why astronomers have come to these conclusions.