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    1. Japan starts space elevator experiments

      Article: https://www.electronicsweekly.com/news/business/japan-starts-space-elevator-experiments-2018-08/ HN thread: https://news.ycombinator.com/item?id=17898152 I know some people here have...

      Article: https://www.electronicsweekly.com/news/business/japan-starts-space-elevator-experiments-2018-08/

      HN thread: https://news.ycombinator.com/item?id=17898152

      I know some people here have strong opinions about space travel, which came up during the Elon Musk topics on Tildes. I wonder if, based on the limited information we have, people think Japan is taking the right approach with the space elevator; whether the cost estimate ($9 billion) sounds reasonable; and if you think they can succeed?

      21 votes
    2. I saw the big dipper tonight

      I live somewhere with relatively little light pollution, so on every clear night all the stars come out. I'm not a very good astronomer though, the big dipper is the only constellation I know. I...

      I live somewhere with relatively little light pollution, so on every clear night all the stars come out. I'm not a very good astronomer though, the big dipper is the only constellation I know. I don't usually go out at night, so seeing it is still a pretty neat thing for me. I also saw the north star by following the tail(?) of the spoon, it's a bit dim and hard to see.

      Any amateur or professional astronomers here? What do you like to look for at night?

      20 votes
    3. How often are satellite images taken? Those that are more periodic, why they don't have much resolution?

      Hi, How often are satellite images taken? Why are more periodic images takes with less resolution (is it a different process?) for example https://zoom.earth takes every 12 hours, but on the most...

      Hi,

      How often are satellite images taken? Why are more periodic images takes with less resolution (is it a different process?)

      for example https://zoom.earth takes every 12 hours, but on the most frequent ones i am not able to zoom much (before it switch to older ones)

      3 votes