Planet Song/Planet 9 Song

The video discusses the hypothetical Planet 9, believed to exist in the outer solar system. Astronomers search for it due to the clustering of Trans Neptunian objects. Theories suggest it could be a giant planet core, possibly ejected from near Jupiter. Despite no observations as of May 2020, its existence hasn't been ruled out. Planet 9's semi-major axis is estimated between 400-800 AU, with an Earth mass of 5-10. The video encourages viewers to consider becoming astronomers to discover this elusive planet.

What is the significance of Planet Nine in the context of the solar system?

Describe the characteristics that astronomers believe Planet Nine might have.

What evidence do astronomers have that suggests the existence of Planet Nine?

How does the hypothetical orbit of Planet Nine compare to that of Earth?

What challenges do astronomers face in discovering Planet Nine?