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Interactive video lesson plan for: Solar System Mysteries - Does Planet X Exist?

Activity overview:

Nigel Goes to Space

Join Nigel as he takes you on his journey to the stars and beyond!

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Does this mysterious rogue planet really exist, or is it just a myth?

Nigel is an internationally acclaimed science populariser and author, specialising in astronomy and space. In this video he responds to a question about Planet X from Jeremy Borges :

“Nigel Hi! My name is Jeremy and I am a teacher at an international school. My class and I have watched your program about Pluto and we are fascinated! We would like to ask you a question about an object in the outer Solar System. We have heard rumours about a "Planet X" and we were wondering if you could make a video to help us understand the science behind the rumour. Thank you so much for your help, and we will continue to watch "Nigel Goes to Space"!!”

Astronomers have been searching for Planet X for more than a hundred years, a hypothetical ice giant orbiting the Sun beyond the Kuiper belt. There's a region at the edge of our Solar System called the Oort Cloud, where long-period comets are thought to originate from. Could an undiscovered planet here account for discrepancies in the orbits of Uranus and Neptune?

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