When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Dark matter makes up about 80 percent of the universe's mass, but scientists still don't know ...

When rockets fire into space, the insides of their engines become an extreme environment where temperatures soar and tiny ...

It may be possible to draw energy from a vacuum using gravity, a theoretical physicist says. If researchers succeed in showing that this can happen, it could prove the long-postulated existence of the ...

An estimated 28,000 to 36,000 deaths a year in the UK are attributed to long-term exposure to air pollution. Exposure to air pollution can cause a range of serious health complications, including lung ...