Program to be optimized

[yangyang-studio]

There are two problems with the software:
1.De430 Failed to download .Please learn from the reprint I sent you for optimization （End of text ）
2.There is a problem with the compiler. Compilation always fails. What version is the author using? The required dependencies are not indicated and are one of the reasons why the software does not work.

Looking forward to your reply, thank you!

Forward :

I just tested and was able to perform a successful download with both Skyfield and also the manual command:

curl ftp://ssd.jpl.nasa.gov/pub/eph/planets/bsp/de421.bsp | wc
But you bring up a good question: what if they were to disable the service someday? I'll go see if there's a mailing list I can join so I'd be warned ahead of time!

Meanwhile, you'll probably want to check other possible sources of connectivity problems between you and the JPL servers. Let me know if you find a root cause, in case any other users are affected. I'll close the issue since it's not a Skyfield problem, but I welcome further comments on the closed issue. Thanks!