The whole notion has always been hypothetical.You are writing about fusion reactors as if they exist, they do not, they may never as bending space with ununpentium 115 may prove easier.
We seem to have reached an understanding of sorts.Theoretically the Earth could be ignited like the Sun, would the reaction stop when free or would more fuel be made available?
To put it in a slightly different way, you cannot "row" in space, there is nothing to row against as it is a vacuum you have heard about so many times.Space is nothing like water as water provides resistance and in Earth water you have Earth gravity to repel against. Space is a vacuum with nothing to grab onto or push against.
Thank you for confirming my previous posts, @Ratwrangler. It is a pleasure to finally hear from someone who knows what they are dealing with.That being said, an ion drive that throws a fuel out faster than any other rocket-type engine is the best drive for long distances, assuming you can heat up the fuel enough to make it go faster.
That's true, but it still would be worth our while to have stronger ones.Ion propulsion does not need much thrust because there is no gravitational field in space to escape and with that the acceleration is constant. So in terms of what we have now a conventional thruster could put a ship in orbit, and the ion thruster could then take over and continue increasing speed to some as of now unknown value
gringoz. jeezusss. THIS IS SO WRONG, i WON'T bother explaining it, to you. !!!
you Really should have LESS CONFIDENCE in the correctness of your (wacky) opinions.!!!!!!
"... as space provides no base or gravitational field to push off of."
so you all have bin into the van Allen belt and by the sounds of it further than that in the universe what gets me is the notion that these comets flying their routes are great balls of fire what if they are supercooled elements that have been ejected from some distance stars or from our own sun in fact after hitting their new atmosphere these comets sopercooled elements do whatever other elements do they expand giving rise to the energy to keep them moving through the universe no
That's why you study chemistry always trying to explode something how about exploding something by supercooling molecules to my understanding get smaller if coole NodFusion reactors only work with hydrogen -> helium at about 15 million K. You need much higher temperatures to fuse larger atoms than hydrogen. Once containment collapses, the fusion reaction will collapse as the hydrogen is blown away. It is not possible to sustain the fusion without the containment of hydrogen at enormous temperatures and pressures.
There you go with the heat thing again chemy get some more chem books in fact study refrigerationSupplies can never be stocked for a long trip (40,000 years to the nearest star) so one must bring all of the ecosystems to grow and recycle food and Oxygen. Then when you get there you have the life forms to adapt and transplant to the new world
Think big or die small
I've been reading science fiction for 60 years, been a scientist for over 50, and dabbled in nuclear engineering while in the Navy during the Vietnam Conflict. That being said, an ion drive that throws a fuel out faster than any other rocket-type engine is the best drive for long distances, assuming you can heat up the fuel enough to make it go faster. Some of the comments here claim that a rocket-type thrust must work against atmosphere or gravity. If that were the case, rockets could not maneuver in space, and we know they can. That is not how Newtonian physics works. If we had fusion reactors, which we do not, we could superheat and throw something out the back end of a rocket and get it moving without expending a lot of fuel. Speed can overcome mass limitations, and there are formulas that show how that works. In space, according to some, we will find one hydrogen atom every cubic centimeter. If a ship could collect those, they could be used as fuel. If the ship is moving at a substantial fraction of the speed of light, it could gather a lot of hydrogen fairly quickly. The problem we have yet to even address, though, is how to protect the people from the cosmic and other radiations. To reach the nearest habitable planet would take several generations, even at relativistic speeds, so some form of shielding would be required.