Carl Sagan once said that "the total number of stars in the universe is larger than all the grains of sand on all the beaches of the planet Earth", which means that there are a lot of stars to explore.
Thankfully, on this day in 2009, NASA launched a satellite that should improve our knowledge of at least a few of those stars.
In other, less techy news, today in 1965, Alabama police got just a little heavy handed with civil-rights protesters marching from Selma to Montgomery. Today also marks the birth of Joseph-Maurice Ravel in 1875; his most famous work Bolero is still well known now.
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