Dark matter is an elusive type of matter that does not emit, reflect or absorb light, yet is estimated to account for most of ...

For centuries, Europeans thought that eternal daylight saturated the cosmos. The shift to a dark universe has had a profound ...

A Pittsburgh Public Safety spokesperson says large crowds were present throughout Downtown. Pittsburgh police responded to fights that broke out, but no major incidents were reported. During the night ...

Stocks tumbled on Monday, extending a dayslong slide. Stocks tumbled on Monday, extending a dayslong slide that presents a dilemma: Should investors buy in at bargain prices or unload in fear of worse ...

You can use multiple light sources to charge solar lights, but they work best with sunlight, so it's almost always better to leave them out in the sun. They use the same technology as solar panels, ...

Stocks tumbled on Monday, extending a dayslong slide that presents a dilemma: Should investors buy in at bargain prices or unload in fear of worse to come? The tech-heavy Nasdaq plummeted 3% last week ...

A powerful geomagnetic storm is causing the northern lights to be visible across the United States. While creating beautiful auroras, intense solar storms can also threaten power grids and ...