A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

The gigantic coronal hole is blasting high-speed solar wind toward Earth, potentially igniting vibrant auroras and minor ...

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

A polar day is when the sun does not set and stays above the horizon for an extended period, while a polar night is when the ...

Southeast Wisconsin was glowing and buzzing Tuesday night as the skies lit up across the Great Lakes region with fiery streaks. Some spectators thought it might be a performance by Mother Nature, like ...

The new moon of January will be at 7:36 a.m. Eastern Time on Jan. 29, according to the U.S. Naval Observatory, and two days ...

Samantha Harvey’s Booker-winning novel 'Orbital' is far more than science-fiction; it raises deeper questions about what it ...

The Roma Family Camp massacre was part of the broader Nazi genocide of Roma people, known in the Romani language as the ...

The colorful northern lights may reveal themselves to a wide swath of Americans Friday night due to an impending solar storm ...

Under the sea ice during the Arctic’s pitch-black polar night, cells power photosynthesis on the lowest light levels ever ...

The agency expects a minor or greater geomagnetic storm—a disturbance of Earth’s magnetic field—on Saturday, which increases ...

NASA affirmed on Wednesday a plan it set last year to work with Elon Musk's SpaceX in returning two astronauts from the International Space Station, saying it ...