CycleChat Ivestigates - Alien Life

[Drago]

Let’s see who is up on the subject. What travels at the speed of light, but is not light?

Superman?

An MP chasing a freebie?

The razor sharp wit of Jimmy Carr?

 

[markemark]

Let’s see who is up on the subject. What travels at the speed of light, but is not light?

Hmm. Neutrinos? Gravitation waves?

 

[Profpointy]

Let’s see who is up on the subject. What travels at the speed of light, but is not light?

Gravitional waves and gluons for starters

I think neutrinos are now considered to have a immeasurably tiny but not zero mass so can't quite travel at lightspeed.

 

[sungod]

Let’s see who is up on the subject. What travels at the speed of light, but is not light?

gravity

 

[Ming the Merciless]

gravity

Give the man a pint

 

[Ming the Merciless]

Gravitional waves and gluons for starters

I think neutrinos are now considered to have a immeasurably tiny but not zero mass so can't quite travel at lightspeed.

And another pint

 

[Ming the Merciless]

Hmm. Neutrinos? Gravitation waves?

The latter, have a half pint

 

[markemark]

The latter, have a half pint

Saw a great lecture at the RI on those many years ago after they detected the first waves.

 

[DRM]

Let’s see who is up on the subject. What travels at the speed of light, but is not light?

a sales rep in a BMW or Audi

 

[steverob]

To put right what once went wrong!

And hoping each time that his next leap will be the leap home

 

[classic33]

 

[Drago]

View attachment 792184

I better slap on some aftershave in readiness for sex experiment abduction!

 

[Punkawallah]

But which end of the dog?

The ‘bone chute’ end smiles; the ‘handshake’ end just does moue.

 

[Punkawallah]

Indeed, hence “as far as we know”. I suspect there would be indirect evidence in terms of skeletal evolution, diaspora etc.

Quite possibly. But it seems we have fossil evidence for only about 1% of all dinosaur species that existed over hundreds of millions of years. For all we know another 1% could be scatted on the worlds of other stars.

 

[Punkawallah]

its not a warp field yet but if they can make stuff move FTL on a small scale who knows whats possible in the future
https://www.ecoticias.com/en/laser-surpassed-speed-of-light/7079/

This is what physicists from the Lawrence Livermore National Laboratory and the University of Rochester have done using plasma, a hot stream of ionized particles. They used one laser to knock off electrons from hydrogen and helium ions and then changed the scenario of the second laser passing through the plasma. The result? To achieve this, the group velocity of the light pulses was controlled to be above 30 percent of the speed of light in a vacuum. Although the individual photons in the light pulse behave as described by the laws of physics, the wave moved faster than permitted.

That’s got to be one hell of a ‘smidsy’, though.