25Hz

Rather than mining for exotic materials, couldn't we generate enough electric current to power an electromagnet? I know that generating electricity in outer space is very limited, but theoretically that should do the trick, right?

When it comes to deep space travel, the problem of solar radiations arises, or more precisely how to shield the astronauts from it. I know that we are protected by the magnetic field of the Earth, but what's the main issue in using the same principles in space? Couldn't we generate a magnetic field around a spaceship? Would it be too heavy? Or would it need too much power? I'm sure the answer is pretty obvious to physicists because I never even heard of this possibility. Thanks in advance.

That's an interesting read. Thanks!

From my knowledge the theory of the accelerating expansion of the universe is based only on the observation of the Doppler effect. Is it possible that light's frequency is dropping (for some unidentified reason) traveling throughout the cosmos and the stars are moving away with a constant speed? If dark energy is blowing up everything (including us), then it is merely a question of perspective if the universe is expanding, or the forces that hold matter together are decaying. In the case of photons this process could also mean loosing frequency. Am I contradicting some scientific observations?