Tag Archives: distant future

Q&A: Is solar energy practical for everyday use?

TweetQuestion by Siripong: Is solar energy practical for everyday use? Why is solar power, in houses for example, is expensive and the solar power in watch and calculator isn’t? So is it practical for everyday use? Best answer: Answer by bookishIt will be someday. Right now the technology is rather primitive, probably because the big … Continue reading

What’s the use of manned space exploration?

TweetWe’ve gotten lots of great science from unmanned space probes, the Hubble telescope, etc., but manned space exploration gives very little extra science for a huge extra price tag. What’s the point? Don’t tell me we’re getting ready to live in space after the Earth becomes uninhabitable. First, any space colony will depend on supplies … Continue reading