Category science

Scientists Say: Stone Age

Stone Age (noun, “STONE age”) The Stone Age is the earliest of three periods in human history before written records. It started around 3.3 million years ago. That’s when people first made stone tools. It’s also a time when people…

Spacecraft need an extra boost to travel between stars 

In Star Wars, pilots enter a dimension — hyperspace — to travel between different worlds. To merge onto this cosmic highway, the ships are equipped with special engines called hyperdrives. Once inside hyperspace, these speedsters zoom faster than light. With…