The status of Pluto not withstanding, our solar system has 8 planets, but one astronomer believes we used to have a ninth that was eaten by the sun.

For the first time since 2008, two new planets are being added to one of northern Maine's most famous — and scientifically accurate — roadside attractions. Dwarf planets Haumea and Makemake are the ...

Which solar system model is best? For as long as humans could look up at the night sky, we’ve been fascinated with the stars. How far away are they? Where did they come from? What secrets do they hide ...

AROOSTOOK COUNTY, Maine (WAGM) - Aroostook County’s iconic Maine Solar System Model is about to get even bigger. Two new dwarf planet models are being added to the roadside attraction that has ...

The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there is a distant Planet Nine out there.

The Sun may have once swallowed a rocky planet with a mass 5 to 10 times that of Earth. This scenario could explain why our ...

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When you see art of our solar system as the planet orbit the sun, you may notice that Earth's orbit has a tilt. It is not a perfect circle. What's more, Earth is not the only planet that displays such ...