Another interesting consequence of relativity is that as time stretches out at high speeds, distances diminish. It’s hard to ...

Time dilation, a real phenomenon, means astronauts can age more slowly than people on Earth during high-speed space travel.

Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...