Shane Kimbrough, currently the only American in space, cast his ballot from the International Space Station (ISS) on Monday.
The astronaut listed his address as “low-Earth orbit,” according to the Christian Science Monitor.
The voting process for them “starts a year before launch, when astronauts are able to select which elections (local/state/federal) that they want to participate in while in space,” NASA officials wrote in a blog post. “Then, six months before the election, astronauts are provided with a standard form: the “Voter Registration and Absentee Ballot Request – Federal Post Card Application.”
NASA astronaut David Wolf was the first American to vote in space, after ‘space voting’ was implemented in 1997 when Texas passed a law allowing them to vote.
“I think it’s pretty amazing,” astronaut Kate Rubins told “Space to Ground,” NASA’s weekly in October. “It’s very incredible that we’re able to vote from up here, and I think it’s incredibly important for us to vote in all of the elections.”
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The Republican presidential nominee, Donald Trump, has said he will encourage joint projects between NASA and other private space companies like SpaceX, Boeing and Blue Origin. However, he has said that public money is needed more in projects based on Earth.
The Democratic presidential nominee, Hillary Clinton, has supported NASA since she was a young girl, even writing to NASA about requirements needed to work for them.