Our solar system is probably on the mild side compared with what happens elsewhere. You probably need that mildness in order to have a habitable planet.” The Nice model is a hypothesis ...

But with some of them nice rings going around it ... Dallas shows an orrery – a mechanical model of the solar system. Before the 17th century most people believed in a geocentric model of ...

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 ...

Need a new idea to keep kids entertained? Try stargazing. Free learning activities and videos about the solar system Free learning activities and videos about the solar system Free learning ...

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many more are waiting to be discovered? Faint signatures detected by the ...