A star exhibits a parallax of 0.250 arcseconds when measured from Earth.(adsbygoogle = window.adsbygoogle || []).push({});

a) What is its distance (pc)?

I know this uses the formula d=1/p, so i can solve this very easily

b) What would its parallax be if measured from Venus’s orbit (arcseconds)? (Look up

the one parameter you need to solve this using the relevant equation.)

I don't know what to do here at all though, I can't look up it's distance from Venus because its an arbitrary star...so what do i do? Can someone guide me to the right direction??

Thanks

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# Parallax and distance

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