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.
Before we understand science, it is natural to believe that God created the universe.
The origin of the name is an enigmatic quotation from James Joyce: Three quarks for Muster Mark!
When a book was published entitled 100 Authors Against Einstein, he retorted, If I were wrong, then one would have been enough!
If we want to travel into the future, we just need to go fast. Really fast. And I think the only way we're ever likely to do that is by going into space.
Although almost every theoretical physicist agrees with my prediction that a black hole should glow like a hot body, it would be very difficult to verify experimentally because the temperature of a macroscopic black hole is so low.