The Sun is about 100 times wider than the Earth and the Earth could fit into the Sun over one million times. It would take 500 years for the fastest person on Earth to run the distance from 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 Oort cloud — the mysterious shell of icy objects at the edge of the solar system — might sport a pair of spiral arms that make it resemble ... developed a new model that suggests the ...

Solar panels are gaining ... answer questions about the system's design and why they're making their specific proposal. "The installer can make a huge difference because the angle and the mount ...

This series of his videos explains how size, distance, and space make solar system models so tricky.

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations may have given them a first glimpse.