Let's Talk Physics

   Thousands of years ago in Ancient Greece, a scientist named Democritus observed sandy beaches from a hilltop. He noticed that from afar, ...

   One day, stars will stop shining. The Sun will rise over the Earth, whatever state it may be in in five billion years, and it will have a...

   Why do the stars shine? I have a very distinct and crisp memory of myself, at a mere age of seven, looking at the stars (and later, the S...

   Hey, all, this post isn't about physics at all, it's just a little something for someone special to me. Feel free to skip it, but...

   Nebula are the nurseries of the stars. It is within these great cosmic clouds that stars form. Nebula were first formed after hydrogen an...

   13.7 billion years ago, there was nothing. Nothing to happen and nothing to have happen to. Then, at the instant of something we now call...

   For about the first two decades of the 20th century, the universe was believed to consist of the Milky Way galaxy. The other galaxies obs...