1.1 The Size of Our Cosmos

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Ian Liberman

Excellent look at how the measurements of the cosmos were formulated

Luke Gurbin

Aristarchus seems to have got an idea of the moon size, but 19th C parrallax firmed up his map needed updating. And so we see with Prof. Max`s course, the levels and maps of the universe keep being contemplated. Thanks to Prof. Tegmark for your course.

John Lee Farnsworth Sr

hmm, no proof that the universe has an end, does that also prove it has no beginning and therefor is infinite. More knowledge from WSU nice.

Ashutosh Tiwari

great

Germain P

Great lecture, thank you! I don't mean to be petty but it seems to me that there is a small inconsistency in the slide about the measure of the Earth-Sun distance. The images of first quarter moon and the last quarter moon are identical although a different half of the moon's visible side is lit in each case.

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