Will we discover an 11th planet? What would it be called? (Beginner)

I am curious as to if scientists will ever find the 11th planet? Is it possible for it to be discovered if they take a giant telescope to Mars and look through it? I would like to know if there is really an 11th planet and what it would be called.

Since the submission of this question, Pluto and Eris (the "10th planet") have both been reclassified as dwarf planets/ Trans-Neptunian Objects (TNOs). 

TNOs are named for gods and goddesses of creation of many cultures. They have names like Sedna, Quaoar, Varuna, Ixion, Huya, Deucalion, Rhadamanthus, and Orcus. Planets, on the other hand, are named for Roman gods and goddesses.  The people who make theses decision are the members of the International Astronomical Union

In 2015, existence of a Planet X (or Planet 9) was proposed to explain peculiar orbital configurations of a few far away Kuiper Belt Objects. However, no direct observational evidence of this hypothetical giant planet has been found yet. 


This page updated on January 28, 2019.

About the Author

Karen Masters

Karen Masters

Karen was a graduate student at Cornell from 2000-2005. She went on to work as a researcher in galaxy redshift surveys at Harvard University, and is now on the Faculty at the University of Portsmouth back in her home country of the UK. Her research lately has focused on using the morphology of galaxies to give clues to their formation and evolution. She is the Project Scientist for the Galaxy Zoo project.

Twitter:  @KarenLMasters
Website:  http://icg.port.ac.uk/~mastersk/

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