When it comes to the things that people really want in science fiction – like space travel – the simplest things end up causing them not to happen. Humans are 100-pound bags of water, built to live on Earth.
I used to read a lot of science fiction when I was younger.
Metaphysical speculation is independent of the physical validity of the Big Bang itself and is irrelevant to our understanding of it. – Lawrence M. Krauss
Now, almost one hundred years later, it is difficult to fully appreciate how much our picture of the universe has changed in the span of a single human lifetime. As far as the scientific community in 1917 was concerned, the universe was static and eternal, and consisted of a one single galaxy, our Milky Way, […]
أنا غير كفؤ للحديث عن اللاشيء، لأن رجال الدين والفلاسفة هم خبراء في لاشيء! – Lawrence M. Krauss
In 5 billion years, the expansion of the universe will have progressed to the point where all other galaxies will have receded beyond detection. Indeed, they will be receding faster than the speed of light, so detection will be impossible. Future civilizations will discover science and all its laws, and never know about other galaxies […]
The amazing thing is that every atom in your body came from a star that exploded. And, the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics: You are all stardust. You couldn’t be here if stars hadn’t […]