Equations that describe time travel are fully compatible and consistent with relativity — but physics is not mathematics.

Nanofabricators could quickly synthesize whatever we need, molecule by molecule.

We should not expect aliens to look anything like us. Creatures that resemble octopuses or birds or even robots are legitimate possibilities.

We’re still not sure what the ultimate question is. Here are 5 excellent candidates. One of the most amusing stories in all of science fiction is Douglas Adams’ The Hitchhiker’s […]

And what role, if any, does gravity play? While most of us have never had the opportunity to go into space, we all have the chance to dream about it and […]

We’ve never found eight stars bound together in the same stable system. But nature might make it so. The Universe that we have is often more wondrous and bizarre than even […]

Two of our biggest science-fiction dreams might not remain fiction for much longer. Here’s how 21st-century science could make it real. For as long as human beings have looked up at […]

The ability to instantaneously jump from one location in space to another clearly violates the laws of physics. Or does it? There are a few rules in the Universe that seem […]

With the right material at the right temperature and a magnetic track, physics allows you to never lose energy. The idea of levitating off the ground has been a staple of […]

When scientists claim that an unexplained phenomenon might be due to aliens, they’re giving up on science. Whenever science discovers a new, unexpected phenomenon, it represents a tremendous opportunity to learn […]

If the Breakthrough Starshot initiative, promoted by Stephen Hawking, works exactly as planned, it could lead to disaster. Imagine yourself on a world not so different from Earth, orbiting a […]

As the new Star Wars movie, Solo, premieres, let’s look at the physics of how his most famous achievement might actually be possible. The Millennium Falcon’s greatest achievement, according to […]

Plus, how the mycelium network’s destruction could, physically, actually end life in the Universe. Imagine taking a seemingly impossible journey: traveling to another Universe on a network of biological spores […]

What if alien life — or even intelligence — don’t look like what we’re searching for? When the original Star Trek premiered, it was revolutionary for depicting sentient, intelligent species other than humans, living […]

Right and wrong has never been so gray in the Star Trek Universe. Imagine you’re in a fight with an enemy, and the fight itself isn’t fair. You might have […]

For the first time, I genuinely enjoyed the new series. There’s been one question that’s bothered me in every episode since Star Trek: Discovery began: why would anyone want to be […]

There’s no science in this episode of science fiction… but there’s a lot of suspicious happenings that no one’s noticing. Following up on the best episode of the season, thus […]

The first (double) episode has come and gone, but here’s what I hope for the series. “We are what we are, and we’re doing the best we can. It is not […]

Many sci-fi technologies will remain in the realm of fiction unless physics changes. But some experiments could uncover just that! “Imagination makes us aware of limitless possibilities. How many of us […]