Last week, on July 14, NASA's New Horizons mission sent a spacecraft to fly over Pluto for the very first time in history, and they did it on a budget of $720 million.
This mission has already completely changed how we see and understand Pluto, and there are more exciting answers to Pluto's many mysteries yet to come.
Alone, $720 million might sound like a lot of money, but it's a very small price to pay if you want to make history. To provide some perspective, here's how much some of the other ground-breaking space missions in human history — like NASA's Apollo program to the Moon and the European Space Agency's mission to a comet— have cost.
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