Paradoxically, we're both closer and farther from zooming across the galaxy than you might think…

A new mission to Mercury will test a quirk of general relativity. It won't be decisive and will involve a lot of precision measurement and tedious number-crunching. And it's exactly the kind of science we should be encouraging.

For the EmDrive and similar schemes to work would require radically different laws of physics. But something as trivial as physical impossibility isn't deterring its advocates...

A new paper argues that nothing ever really falls into a black hole thanks to extreme time dilation and frame dragging.

Just like supermassive black holes, planets can bend light with their gravity. But do they bend it enough for us to detect them that way?

Something is wrong in the data we get when we measure distances to far away quasars to see how fast the universe is expanding.

Despite what you have been told, general relativity has not yet been overturned, modified, or revolutionized.

Wormholes exist, but they may be impractical for travel according to what we know about the physics behind them.

It's difficult for three dimensional being to image a universe with ten dimensions. We might have to anyway.