why do we think there is a possible Planet X?
- Written by: Sara Webb, Postdoctoral Research Fellow, Centre for Astrophysics and Supercomputing, Swinburne University of Technology
ShutterstockWhy do we think there is a possible planet X? – Courtney, Year 5, Victoria
Hi Courtney, what a great question!
Our Solar System is a pretty busy place. There are millions of objects moving around – everything from planets, to moons, to comets and asteroids. And each year we’re discovering more and more objects (usually...