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Just want to start by saying some of the understanding that a lot of the major contributors show on this forum is amazing! (bows very low) Then the ability to convey that to others is fantastic!

As the title suggests, is it possible to observe something 'apparently' travel faster than the speed of light?

Hypothetically:

Everything is stationary in space.

The moon is at a distance of 2 light seconds from earth. A rocket is launched and attains c instantaneously, then takes the two seconds to travel to the moon.

There are 4 observers, one observer on the surface of the earth, one observer on the landing site on the moon, one observer at the midway point close to the trajectory path, and the last at the midway point but 1 light second to the side of the trajectory path. They all have watches which are synchronized and the launch time of the rocket is at 12:00.00pm (earth time).

The observer on the Earth 'sees' the rocket leave @ 12:00.00 and take 2 seconds to get to the mid point, and 4 seconds to get to the moon @ 12:00.04

The observer on the moon 'sees' the rocket stationary on the surface of the Earth till 12:00.02, then magically appear next to him @12:00.02

The observer at the mid point sees the rocket stationary till 12:00.01, then passes him at the same time, and goes on seem to take another 2 seconds to get to the moon @ 12:00:03

But the interesting observation would be from the point 1 light second to the side, they would 'see' the rocket leave the launch site @ 12:00.014, get to the mid point @ 12:00.02, then land on the moon @ 12:00.034.

The first half (1 light second) of the journey would appear to take .6 of a second, then the remaining half (1 light second) would take 1.4secs. The whole journey would appear as it took the actual 2 seconds, but the first half and second half at differing speeds.

So, is that observation possible or am I missing something?

I assume that the apparent colours of the rocket would be shifted for the observers during the trip also.

Sorry about my explanation.

Damo

As the title suggests, is it possible to observe something 'apparently' travel faster than the speed of light?

Hypothetically:

Everything is stationary in space.

The moon is at a distance of 2 light seconds from earth. A rocket is launched and attains c instantaneously, then takes the two seconds to travel to the moon.

There are 4 observers, one observer on the surface of the earth, one observer on the landing site on the moon, one observer at the midway point close to the trajectory path, and the last at the midway point but 1 light second to the side of the trajectory path. They all have watches which are synchronized and the launch time of the rocket is at 12:00.00pm (earth time).

The observer on the Earth 'sees' the rocket leave @ 12:00.00 and take 2 seconds to get to the mid point, and 4 seconds to get to the moon @ 12:00.04

The observer on the moon 'sees' the rocket stationary on the surface of the Earth till 12:00.02, then magically appear next to him @12:00.02

The observer at the mid point sees the rocket stationary till 12:00.01, then passes him at the same time, and goes on seem to take another 2 seconds to get to the moon @ 12:00:03

But the interesting observation would be from the point 1 light second to the side, they would 'see' the rocket leave the launch site @ 12:00.014, get to the mid point @ 12:00.02, then land on the moon @ 12:00.034.

The first half (1 light second) of the journey would appear to take .6 of a second, then the remaining half (1 light second) would take 1.4secs. The whole journey would appear as it took the actual 2 seconds, but the first half and second half at differing speeds.

So, is that observation possible or am I missing something?

I assume that the apparent colours of the rocket would be shifted for the observers during the trip also.

Sorry about my explanation.

Damo

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