An Egyptian astronomer called Ptolemy (AD100-168) described one of the earliest ideas for how the Solar System is structured. Ptolemy’s model and many earlier ideas of the Solar System had the ...

Narrator: Serious scientists, like myself, believe our solar system was formed by the collapse ... This theory was known as the heliocentric model. It was controversial as accepted wisdom at ...

However, a new model suggests ... study gives new ideas about what it might look like. If confirmed, this discovery could change what we know about the edge of our solar system.