What If the Speed Of light was only 100 km/s?

What if the speed of light was only 100 km per second?
If the speed of light were only 100 kilometers per second, the universe would feel completely different from how we experience it today. Light would no longer be instant. Everything you see would actually be happening in the past. The Sun, which is about 150 million kilometers away from Earth, would take around 17 days for its light to reach us. That means when you look at the Sun, you wouldn’t be seeing it as it is now, but as it was more than two weeks ago.
Daily life would feel strange and unsettling. When you turn on a light, the room wouldn’t brighten immediately—it would take noticeable time for the light to travel across the space. Looking at a mirror would be even creepier: your reflection would be delayed, so you’d see your own actions moments after you actually did them. Fast-moving objects, like cars or planes, could literally outrun the light reflecting off them, making them partially invisible or wrapped in darkness.
Communication would slow down drastically. Video calls, live broadcasts, and even simple phone signals would suffer huge delays. Space exploration would become extremely difficult, as signals sent to satellites or other planets would take days, months, or even years to arrive.
In short, a universe with light moving at just 100 km per second would feel dark, delayed, and deeply disconnected. Reality itself would seem broken—because seeing would no longer mean seeing the present, only echoes of the past.
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