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Unveiling the Fate of the Universe

supernova 19941Hubble is offering a glimpse of the fate of the universe, thanks to the telescope’s ability to view exploding stars known as supernovas in more distant realms than ever before. By measuring how bright supernovas appear, Hubble can tell us the distance to both the supernovas and their home galaxies. Since we know that the closest supernovas are the youngest and the most distant supernovas are the oldest, astronomers can use them to look at the behavior of the cosmos at different points in the history of the universe. By using Hubble images of extremely remote supernovas, scientists recently made the remarkable discovery that younger parts of the universe are expanding faster than older parts--suggesting that the expansion of the universe will continue to speed up in the future.


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