Proportional Planets’ scale model of the solar system features die-cut vinyl images with adhesive backing of the eight major planets and the Moon. Sizes range from 27.4 inches ...

A video of the huge (but shrunken) solar system has attracted more than 400,000 views since it was posted on the To Scale Series Facebook page.A companion video shows how the model was made, with ...

The size of the Solar System and the Universe is truly beyond our comprehension. When we think of the vastness of space, we ...

Pouring rain didn't dampen the spirits Saturday of about 100 people who gathered to witness the unveiling of a scale-model solar system at the McCarthy Observatory in New Milford. The centerpiece ...

As Pluto is finally added to the University of Arizona's scale model solar system, a new study suggests how the dwarf planet's cold heart was originally broken.

If it exists, it would take between 10,000 and 20,000 years to complete one orbit around the Sun, making it the slowest-moving planet in our solar system. The Theory Behind Planet Nine’s Existence ...

"If there is not Planet Nine, we would have to come up with 5-6 separate (and unknown) explanations for all of these oddities in the outer solar system." Artist's impression of Planet Nine with a ...

The elusive Planet Nine, which is theorized to be lurking somewhere in the outer reaches of the solar system, may not be a planet after all, a new study suggests.

Almost a decade after astronomers proposed the existence of Planet 9, an unseen extra planet in the distant reaches of the solar system, they still haven’t all agreed whether it’s real or not ...