A partial solar eclipse on Saturday will make it look as though the moon has taken a bite out of the sun over parts of the world. The celestial event comes just two weeks after a lunar eclipse created ...

There may be more northern lights – or aurora borealis – sightings this spring. As we near the spring equinox, also known as the vernal equinox, on March 20, the Earth's magnetic field and ...

A quartet of small, rocky exoplanets likely circle Barnard's Star, around 6 light-years from Earth, putting them in contention as targets of missions for future human generations.

"The rule of thumb is that the further north you travel, the less [solar] activity you need to have lights in the sky." Other places within the Arctic Circle, like Abisko National Park in Sweden or ...