Travel by bubble might seem more appropriate for witches in Oz, but two physicists suggest that a future spaceship could fold a space-time bubble around itself to travel faster than the speed of light.
We're talking about the very distant future, of course.
The idea involves manipulating dark energy — the mysterious force behind the universe's ongoing expansion — to propel a spaceship forward without breaking the laws of physics.er:
The Himalaya mountain range
Answer: North America, South America, Antarctica, Europe, Africa, Asia, Australia
Answer:
Writing
Explanation:
Hunter-gatherer societies had religion, art, language, and many other things that other later societies also had. But they didn't know how to write. Writing came later with more permanent settlements that were made possible by humans learning how to cultivate and grow their food and didn't have to move that much, or at all anymore.
