Dark matter might heat exoplanets enough to make them glow

We know that dark matter exists, but, irritatingly, we don’t know what it is.

One way to figure that out is to look for signs of it here on Earth, using subatomic particle detectors. But a new idea just published in a scientific journal is that we need to go bigger. A lot bigger: Using entire exoplanets as detectors.

I give them points for thinking originally, for sure.

Dark matter is a form of matter that has mass and gravity, but doesn’t emit light or interact with normal* matter directly. ...