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In general relativity, matter and energy curve spacetime, which we experience as gravity. Why can’t there be an “antigravity” force?

Everything is made of matter, not antimatter, including black holes. If antimatter black holes existed, what would they do?

For some reason, the charges on the electron and proton are equal and opposite, and their numbers are equal, too. But why?

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 […]

In 1994, Miguel Alcubierre showed how warp drive could be made real within General Relativity. What does that imply? “Its continuing mission: to explore strange new worlds, to seek out new […]

In the quest to measure how antimatter falls, the possibility that it fell “up” provided hope for warp drive. Here’s how it all fell apart.

Everything is being driven apart. But there’s hope of reaching what’s currently so far away. For the first 7.8 billion years, the Universe unfolded exactly as scientists would have expected in […]

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 […]

No, you are most definitely not entitled to your own facts. In fact, you’re required to disclose what evidence would change your mind! “You must remember, my dear lady, the most […]