The 54 meters per second figure estimated its speed when the universe was first forming, extrapolated to how fast the dark matter could travel today if it were still in motion [source: Woo ]. Finally, consider what would happen if you extend the definition of darkness to include black holes, which are devoid of light.
In , researchers determined that one massive black hole measuring more than 2 million miles 3. Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots. Mobile Newsletter chat avatar. Mobile Newsletter chat subscribe. Astronomy Terms. Is there a speed of darkness? If light can travel and we're able to measure it, what then becomes of the speed of darkness?
Scientists have long established the speed of light at just shy of ,, meters per second, or around , miles per second.
Since both spheres of light are expanding outwards in all directions at the speed of light, the band of darkness between them must also be traveling at the speed of light. You can think of darkness as what you get right after the last bit of light arrives. Since the last bit of light travels at the speed of light, the state right after must also travel at the speed of light. If the sun suddenly disappeared, it would stop shining light on the earth and the earth would go dark.
But it takes 8 minutes and 19 seconds for the light from the sun to reach earth. The last bit of light given off by the sun right before it disappeared would take 8 minutes and 19 seconds to reach us, and the darkness that comes right after the last bit of light would also take 8 minutes and 19 seconds to reach us.
We on earth would not see the sun disappear from the sky until 8 minutes and 19 seconds after it had vanished. Scientists have demonstrated that the Universe is expanding, and this expansion is even faster than the speed of light. If you were to hold a torch and run with it, the speed of its light would still travel at the same rate. Some galaxies are moving away from our Milky Way faster than the speed of light, and this is happening because space itself is moving along with them.
If there were something more efficient than traveling with the speed of light, it would be traveling through wormholes. Wormholes are hypothetical, but their mechanism is quite intriguing, and in a way, if it were possible, they are supposedly faster than the speed of light. This is because a wormhole connects two distant points, and, in theory, if you were to travel from point a to b, regardless of its distance, you would reach your destination extremely fast.
However, this may seem a bit more complicated. If we were to put a dark spot in a beam of light, darkness would theoretically move at the same speed as light. The same holds true if we would illuminate a dark corner.
It is uncertain if darkness itself has a speed, but when it comes to dark matter, things start to unfold. Things get complicated if we look at black holes as part of the definition of darkness.
Black holes are devoid of light, and if anything gets near their event horizon, not even light can escape from them.
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