I am in astrology and I have to calculate cosmological distances between things in space and I need help with the math
There is the question
you have to go to a star that is 415 years away traveling at 99700 kmh how many years does it take you
In: Mathematics
See the others, but also:
You’re not travelling at 99700 km *times* h, but at 99700 km *per* h. (kph or km/s)
Also, “cosmic distances”, not “cosmological”. Distances on the scale of the cosmos, not distances on the scale of the study of the cosmos.
I think your issue was that you didn’t recognise that “lightyear” is a shortcut for the rather unwieldy value of 9,460,730,472,580.8 km. The distance light in a vacuum travels in one year. (BTW: You also may stumble upon the parsec later. That’s 30,856,775,714,409.19 km. Another simple shortcut.)
There’s nothing special about the lightyear other than that it incorporates the speed of light. But the other part, the length of an Earth year, is pretty arbitrary. The only reason such a random shortcut unit stuck around is that it’s better than having to measure those distances in metres…
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PS: And the answer naturally is “none at all because I wouldn’t agree to go on such a long journey.” 😉 😉 😉
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