Two Sydney university students have helped fix the world's most powerful space telescope - and have the matching tattoos to prove it.

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Louis Desdoigts and Max Charles, both University of Sydney students, helped deliver a software tweak to the $15 billion James Webb Space Telescope to fix a blurring issue without the need for a trip to space.

Supervised by Professor Peter Tuthill and Associate Professor Ben Pope, the duo spent two years developing software that predicts where the blurring will occur and fixes it in post-production.

"Instead of f

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