NASA's Flame Extinguishment - 2 (FLEX-2) experiment is designed to study the characteristics of burning fuel droplets in space, aboard the International Space Station. But under certain conditions, it looks an awful lot like the crossguard lightsaber from the trailer for Star Wars: Episode VII.

@ISS_Research tweeted the comparison earlier today:

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For what it's worth, NASA's image sure looks like it pokes some serious holes in Stephen Colbert's single blade theory.