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/sci/ - Science & Math

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15077959 No.15077959 [Reply] [Original]

>Observable universe is ~93 billion light years in diameter
>Universe is 13.8 billion years old
>Speed of light is fastest speed
How?

>> No.15077962
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15077962

>> No.15077976

Speed of universe expanding is far more than that of light, but we don't really know about it .That's why we call that force Dark force and matter, Dark Matter.

thanks

>> No.15077999

>>15077959
space expansion
see Hubble constant
current measured rate is about 2cm/s per ly

>> No.15078005

>>15077999
about 97% of the observable universe is receding from us at speeds larger than the speed of light

>> No.15078014

>>15077959
There is a universal speed limit for things moving in space time,
but no speed limit for how fast the geometry of space time itself can change.

>> No.15078033

>>15078014
>>15078005
>>15077999
how reliable is the knowledge of the expansion of spacetime?

>> No.15078158

>>15077959
Look we've already worked it out, ok. The universe is expanding and we know it's true because of a red light. Voyager is already on the way there to verify we were right so you'll see and all the haters will be proven wrong

>> No.15079948

>>15077959
because its just light that has that particular limit, hence why people call it the speed of light. That nothing to say of the speed of the other underlying forces effecting the expansion rate of the universe.