Does Human Body sustain light speed vehicles?

Now a says astrophysicist are trying to invent light speed vehicles for search of extra terrestrials.

Provided you accelerate to near lightspeed velocities slowly enough, yes.

You are moving through the universe at 1 200 000mph WRT CMB; are you having a problem at this speed? If it feels like this at that speed, what will it feel like near the speed of light? At any constant speed, in a straight line, you will feel stationary.

You are moving through the universe at 1 200 000mph WRT CMB; are you having a problem at this speed? If it feels like this at that speed, what will it feel like near the speed of light? At any constant speed, in a straight line, you will feel stationary.

but i can feel the speed , while travel by train or bus.

but i can feel the speed , while travel by train or bus.

No, you feel acceleration. You may have a visual sense of speed if you can see 'stationary' objects out the window, but this is not the same as feeling speed.

but i can feel the speed , while travel by train or bus.

You can only feel speed when there's an undergoing change in it ie acceleration (in physics this means both up or down in speed). It's other visual and physical cues that is telling you that you are moving. Take them away and you wouldn't have a clue you were moving.

Edited December 29, 201411 yr by StringJunky

You are moving through the universe at 1 200 000mph WRT CMB; are you having a problem at this speed? If it feels like this at that speed, what will it feel like near the speed of light? At any constant speed, in a straight line, you will feel stationary.

Where did that figure come from?

Where did that figure come from?

 

Relative to the CMB: The Milky Way itself, along with the rest of our local group of galaxies, is whipping along at 550 km/s (1.2 million mph) with respect to the Cosmic Microwave Background. Ultimately, the CMB may be the best way to define “stationary” in our corner of the universe. Basically, if you move quickly then the light from in front of you becomes bluer (hotter), and the light from behind you gets redder (colder). Being stationary with respect to the CMB means that the “color” of the CMB is the same in every direction or more accurately (since it’s well below the visual spectrum) the temperature of the CMB is the same in every direction (on average).

 

http://www.askamathematician.com/2014/02/q-how-fast-are-we-moving-through-space-has-anyone-calculated-it/

 

Where did that figure come from?

 

Relative to the CMB: The Milky Way itself, along with the rest of our local group of galaxies, is whipping along at 550 km/s (1.2 million mph) with respect to the Cosmic Microwave Background. Ultimately, the CMB may be the best way to define “stationary” in our corner of the universe. Basically, if you move quickly then the light from in front of you becomes bluer (hotter), and the light from behind you gets redder (colder). Being stationary with respect to the CMB means that the “color” of the CMB is the same in every direction or more accurately (since it’s well below the visual spectrum) the temperature of the CMB is the same in every direction (on average).

 

http://www.askamathematician.com/2014/02/q-how-fast-are-we-moving-through-space-has-anyone-calculated-it/

 

Thanks for that

Latest from Wikipedia is:

 

http://en.wikipedia.org/wiki/Cosmic_microwave_background#CMBR_dipole_anisotropy

From the CMB data it is seen that our local group of galaxies (the galactic cluster that includes the Solar System's Milky Way Galaxy) appears to be moving at 627±22 km/s relative to the reference frame of the CMB (also called the CMB rest frame, or the frame of reference in which there is no motion through the CMB) in the direction of galactic longitude l = 263.99°±0.14°, b = 48.26°±0.03°.[85][86] This motion results in an anisotropy of the data (CMB appearing slightly warmer in the direction of movement than in the opposite direction).[87] The standard interpretation of this temperature variation is a simple velocity red shift and blue shift due to motion relative to the CMB, but alternative cosmological models can explain some fraction of the observed dipole temperature distribution in the CMB.[88]

 

 

Where did that figure come from?

 

Relative to the CMB: The Milky Way itself, along with the rest of our local group of galaxies, is whipping along at 550 km/s (1.2 million mph) with respect to the Cosmic Microwave Background. Ultimately, the CMB may be the best way to define “stationary” in our corner of the universe. Basically, if you move quickly then the light from in front of you becomes bluer (hotter), and the light from behind you gets redder (colder). Being stationary with respect to the CMB means that the “color” of the CMB is the same in every direction or more accurately (since it’s well below the visual spectrum) the temperature of the CMB is the same in every direction (on average).

 

http://www.askamathematician.com/2014/02/q-how-fast-are-we-moving-through-space-has-anyone-calculated-it/

 

Thanks for that

Latest from Wikipedia is:

 

http://en.wikipedia.org/wiki/Cosmic_microwave_background#CMBR_dipole_anisotropy

From the CMB data it is seen that our local group of galaxies (the galactic cluster that includes the Solar System's Milky Way Galaxy) appears to be moving at 627±22 km/s relative to the reference frame of the CMB (also called the CMB rest frame, or the frame of reference in which there is no motion through the CMB) in the direction of galactic longitude l = 263.99°±0.14°, b = 48.26°±0.03°.[85][86] This motion results in an anisotropy of the data (CMB appearing slightly warmer in the direction of movement than in the opposite direction).[87] The standard interpretation of this temperature variation is a simple velocity red shift and blue shift due to motion relative to the CMB, but alternative cosmological models can explain some fraction of the observed dipole temperature distribution in the CMB.[88]

 

That one gives a bit higher figure of 1 400 000 +/- 47 000mph.

That one gives a bit higher figure of 1 400 000 +/- 47 000mph.

That's why I quoted it.

Acceleration is derived from speed, Acceleration is not visible to eye

Velocity or speed is visible to the eye.

Acceleration is derived from speed, Acceleration is not visible to eye

Velocity or speed is visible to the eye.

 

But, as Galileo established several hundred years ago, all movement is relative. There is no way that you can tell if you are moving at a constant velocity or stationary, except by reference to some other object. You can choose to say they other object is stationary and you are moving relative to it; or that you are stationary and the other object is moving. It makes no difference.

 

But you can always feel acceleration. (And you can see it, obviously.)