Latest Robert Scherrer Stories
Faced with the impossibility of travelling faster than the speed of light, what's a science fiction writer to do? The easiest solution is to ignore the problem entirely. The world of science fiction is full of "warp drives," "hyperdrives," travel through "subspace," and their relatives -- the writer simply assumes that someone, sometime, will figure out a way to circumvent the cosmic speed limit.
One of the enduring themes of science fiction is the galactic empire: Thousands of star systems tied together by gleaming spaceships hurtling through the cosmos. And why not? Civilization on Earth progressed from hunter-gatherers eking out a bare existence to planet-spanning empires over the course of a few thousand years. Surely our next step will be to colonize the Galaxy.
Imagine a time when the entire universe froze. According to a new model for dark energy, that is essentially what happened about 11.5 billion years ago, when the universe was a quarter of the size it is today.
Two physicists have shown that matter as we know it will remain as the universe expands at an ever-increasing clip. That is, the current status quo between matter and its alter ego, radiation, will continue as the newly discovered force of dark energy pushes the universe apart.
- The horn of a unicorn considered as a medical or pharmacological ingredient.
- A winged horse with a single horn on its head; a winged unicorn.