They show up as a mathematical solution in general relativity, basically as a time-reversed version of a black hole. Some ...

All the “normal” matter, like the stars, gas, dust, and people, is called baryonic matter, and it’s basically the tiny visible fraction of a universe that’s mostly invisible and still not fully ...

Think about space for a couple minutes, and it’s pretty cool. Think about space for a couple hours, and you might be on the verge of an existential crisis. Even if you want to fight your anxiety over ...

The curious minds at What If reveal shocking space facts you never knew, exploring mysteries, discoveries, and the wonders of ...