Time travel may be possible, but it is not practical.

In this way, Edwin Hubble worked out the distances to nine different galaxies. We now know that our galaxy is only one of some hundred thousand million that can be seen using modern telescopes, each galaxy itself containing some hundred thousand million stars.

In a world that is in chaos politically, socially and environmentally, how can the human race sustain another 100 years?

I am just a child who has never grown up. I still keep asking these 'how' and 'why' questions. Occasionally, I find an answer.

God not only plays dice, he throws them in the corner where you can't see them.

Among physicists, I'm respected I hope.

We find ourselves in a bewildering world. We want to make sense of what we see around us and to ask: What is the nature of the universe? What is our place in it and where did it and we come from? Why is it the way it is?