A Maine landmark is back in full orbit.

Stretching from Topsfield in Washington County to the St. John Valley along U.S. Route 1, it is the largest complete, designed-to-scale solar system model in the world.

The unpainted models of Haumea and Makemake, with a hand for size comparison. The dwarf planets models are slightly smaller than a quarter. Credit: Cameron Levasseur / The County Ever since the ...

Our sun is about five times less magnetically active than other sunlike stars—effectively a special case. The reason for this could reside in the planets in our solar system, say researchers at the ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...