SpaceRip has created a video on challenges and possibility of interstellar flight.
You can watch the video below:
The University of Washington has reported on some of it's engineers working on designs for a prototype fusion reactor, that could be scaled up, and could produce energy on a practical scale that is cheaper than coal fired power stations.
Fusion power is basically the idea of creating what the Sun does on earth. It's where hydrogen atoms are fused together to create helium, and the energy from that fusion is collected and channeled into producing electricity. The amount of energy we are looking at would be the equivalent of the hydrogen in a single glass of water, producing the same amount energy as half a million barrels of petroleum.
When commercial scale fusion reactors are ever achieved. It will overcome a huge obstacle of providing power and long term propulsion for spacecraft traveling around our solar system. Chemical rockets are a really inefficient form of interplanetary propulsion.
Source (University of Washington)
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