In 1951, physicist Julian Schwinger theorized that by applying a uniform electrical field to a vacuum, electron-positron ...

What was the universe like in the first few hundreds of millions of years after it came into existence? How did the first stars and galaxies form? Those are questions that astronomers now have a ...

But under the rules of the real universe, is it really possible to achieve? The answer may be more complex and fascinating than you think. Today, let's discuss the "possibilities" and "paradoxes" of ...