DALLASI absolutely love this, it's called an orrery, and it's a little mechanical model of our solar system. You can see the planets here, orbiting the sun as they would do in real life.

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 ...

2024 YR4 hails from the middle of the main asteroid belt that hangs out between the orbits of Mars and Jupiter – and it was ...

Electrical efficiency Image: University of Manchester, Solar Energy, CC BY 4.0 Scientists created a numerical model to describe the system ... Indonesia. The initial temperature was uniformly ...

like our solar system, or by rapidly collapsing from a young star's cooling disk into massive objects. Knowing which model is more common can give scientists clues to distinguish between the types ...