oracle99's latest activity

I was thinking of a solar thermal rocket, which can deliver a large acceleration when close to the sun, but fermi is also interesting...

I assume you mean the scenario, which you described in the OP. The peak speed is reached in the middle between Earth and Alpha...

Alternative to @Sagittarius A-Star's rapidity method, you can use ##v/c=\frac{at/c}{\sqrt{1+a^2t^2/c^2}}##. Using years and light years...

Thanks, I was not very clear, yes I meant the threads first post, rather than my last one. .94 c is quite a speed, I think there are...

I wonder what would be the peak speed in this scenario, as a % of light speed?

For those interested in the practical side of interstellar travel, the Universe Today have a 5 part series covering the history of...

Yes, I suppose its more than a perception, its how the traveller experiences time. If we also place earth in the gravitational well of...

Yes, I understand it is only percieved time elapsed, the traveller cannot actually travel faster than light.

In the original question I made a point if returning the traveller to the original frame of reference, earth. Obviously i bow to your...

I understand that the traveller is not literally travelling faster than light, just that you would percieve that, in that time frame...

There is an old joke "you can put a billion dollars worth of plutonium into a suit case, but only briefly.."

So if you travel 3 years you get sqrt(3*3+1)-1= 2.16 light years, about half way to Alpha Centauri, so decelerate is the same, so approx...

I thought about it in these terms: If you converted the entire mass of the earth into energy, (by E=mc2) that vast amount of energy...

Just a simple little question as my first post here.. Suppose you have a space craft that has an engine that can exert an acceleration...