ScienceCasts: Hubble’s Contentious Constant
There are two leading ways to measure the universe's rate of expansion, and for fifteen years, they more or less agreed with one another. Not anymore, and that’s a big deal. Visit http://science.nasa.gov/ for more. Click here to see more videos: https://alugha.com/NASA
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Click here to see more videos: https://alugha.com/NASA Visit http://science.nasa.gov/ for more. People around the world have the opportunity to participate in the study of comet 46P/Wirtanen as it has a close approach with Earth in December of 2018.
Click here to see more videos: https://alugha.com/NASA AMS-02 is helping scientists investigate many fundamental physics questions from its place on the space station. Astronauts are conducting a series of spacewalks to perform repairs and extend the life of the observatory. Space Station Research