Want to see seven planets align in the night sky? You can. Here are the dates to be ready for.

Richard Feynman is one of history’s most significant (and most eccentric) physicists. And you can see all his physics lectures online — for free.

The Kardashev Scale helps us understand whether a civilization is technologically advanced or not. So, where does Earth stand?

So, you think black holes are weird? Well then, let me tell you about white holes.

Solar storms are amazingly powerful and destructive events. So, what if a massive solar storm happened today?