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The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... Of all the stars we've ever observed where a supernova did eventually occur, we have never yet uncovered a correlation between a dimming event such as this and a supernova. As much as we might hope for such a spectacular, rare, and nearby event like a supernova to occur in our lifetime, the recent faintness of Betelgeuse doesn't point in that direction at all. ... "
" ... Since dark energy was first hinted at and then discovered in the 1990s — from the large-scale structure of the Universe, from the requirements of the Universe's age for the stars within it, from the faintness of distant supernovae, and from the combined flatness of the Universe with the measured matter density — scientists have known it's been incredibly consistent with what we call a cosmological constant: one of the few things we can add into Einstein's General Relativity that doesn't violate the core predictions of the theory itself. ... "
" ... To view them, three obstacles must be overcome: their faintness, their apparent redness, and the intervening neutral matter. ... "