Sunspot AR3767 erupted with a X1.7-class solar flare, followed by an X1.1-class flare from sunspot AR3780. NASA's Solar ...

The potential sightings could be the last chance to see the northern lights this weekend before the forecast weakens Sunday.

There are two eclipses, a full 'Worm Moon', the 'Blood Moon' and a lot more to look forward to in the coming weeks, as ...

An environmental expert fact-checked a CEO's claim about natural gas, demonstrating it's not the cheapest or cleanest energy source.