Worldwide, renewables produced more electricity than coal across the first half of this year — a first, according to ...

President Donald Trump’s new budget law repeals a key federal tax incentive for residential solar — and rooftop solar installations are about to plunge as a result. Americans are expected to install ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labeled as planet X, prominent astronomers ...

A long-dormant coal mine waste site in Pennsylvania has new life, providing solar power to the local community thanks to a groundbreaking tracking system enabling installation across challenging ...

A SpaceX rocket lifted off Wednesday from the Kennedy Space Center in Cape Canaveral, carrying NASA's Interstellar Mapping ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...