Our best models of the cosmos don't add up — but that could change if the universe is actually made of a viscous 'fluid,' a ...

When my colleagues and I send them out to explore our solar system, it's important for us to understand the 3D map of our ...

Though sci-fi movies would have us believe that space is incredibly cold — even freezing — space itself isn't exactly cold. In fact, it doesn't actually have a temperature at all. Temperature is a ...

Is the universe infinite? It's one of the most profound questions we can ask, and here's the short answer: We don't know. While we have learned a great deal about the universe, a portion of the cosmos ...

As humans prepare for longer missions to the moon and Mars, scientists are trying to understand how space affects the human body. One of the biggest concerns is space radiation — high-energy particles ...