For every cell in your body, there’s another tiny single-celled creature that also calls your body home. Far from being germs we should eradicate, these ancient friends allow us to …

The inflationary theory of cosmology, an enduring theory about our universe and how it was formed, explains that just after the Big Bang, the universe went through a period of rapid expansion. This theory has been critical to understanding what’s going on in the cosmos today.

The mysteries of dark matter and dark energy may be evidence that we don’t fully understand the force of gravity. But when it comes to a force that has been studied mathematically and probed observationally for hundreds of years, what do we still need to learn?

“We can rebuild him. We have the technology,” began the opening sequence of the hugely popular 70’s TV show, “The Six Million Dollar Man.” Forty-five years later, how close are …

A few decades ago, we knew of no other planets beyond those in our solar system. Today, astronomers have confirmed over 700 planets circling other suns and believe billions more lay undiscovered.

Black holes may hold the key to understanding the most fundamental truths of the universe, but how do you see something that’s, well, black? Astronomers think they have the answer. …