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These Halloween Costumes Are Out of This World! Halloween staff celebrated Halloween at the office. Staff writer Sarah Lewin dressed up as Tabby's Star, the possible "alien megastructure." Staff writer/producer Hanneke Weitering dressed up as Saturn, the hula hooping champion of the solar system.
(Image: © Steve Spaleta)

NASA has asked the Internet to submit photos of space-themed Halloween costumes on social media using the hashtag #NASACostume. From astronauts to rockets, planets and satellites, here are some of the most amazing cosmic costumes we've seen.

And here are our favorite #NASACostume photos from Halloweens past:

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