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Questions tagged [astronomy]

For challenges about objects and processes or physics and chemistry of such kind that originate outside the atmosphere of Earth.

12 votes
1 answer
487 views

If you model a satellite as a free point orbiting a body, you can pretty easily see it has 6 degrees of freedom: three for the X, Y, and Z position, and three for the X, Y, and Z velocity. However, ...
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  • 1,611
14 votes
6 answers
678 views

The variable star designation is an identifier for a variable star (a star that fluctuates in brightness). It consists of either a 1-2 letter code or (when the letter code is no longer sufficient) a '...
Sinthorion's user avatar
13 votes
2 answers
2k views

Introduction tl;dr In this challenge you have to calculate the moon's phase for a given date. This challenge is inspired by the game psycho social audiovisual experiment "Superbrothers: Sword & ...
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