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5 godz. temu · The distance the light from the edge of the observable universe has traveled is very close to the age of the universe times the speed of light, 13.8 billion light-years (4.2 × 10 ^ 9 pc), but this does not represent the distance at any given time because the edge of the observable universe and the Earth have since moved further apart.
1 dzień temu · Poster, entitled "MOOC, every letter is negotiable", exploring the meaning of the words "massive open online course" A massive open online course (MOOC / m uː k /) or an open online course is an online course aimed at unlimited participation and open access via the Web. In addition to traditional course materials, such as filmed lectures, readings, and problem sets, many MOOCs provide ...
