AST201 Lecture 3.docx

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Department
Astronomy & Astrophysics
Course
AST201H1
Professor
Michael Reid
Semester
Winter

Description
AST201 Lecture 3 Tuesday January 14 2014The Twin Paradoximagine you are in a spaceship on your way to the star Vega at 999 the speed of lighta light year is a measure of distance not timeit is the distance light travels in 1 year1 light year 95 trillion kmstart off with 2 people born in the same momentone gets in a spaceship and goes off to Vega the other stays on Earththe twin on Earth will have aged 50 years because the trip to Vega from their perspective took 25 years there an
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