Planet X637Z-43 is a 2015 internet hoax purporting to document the discovery by NASA of a planet covered in cannabis. Supposedly it was one of 715 planets discovered by the Kepler space telescope in 2014. The story originated on a fake news website, NewsWatch28 (also reported as 28 News Watch).
- Jha, Nupur (April 17, 2017). "Hilarious hoaxes: Fake news stories that will make you wonder what NASA's been smoking!". International Business Times. Retrieved November 19, 2018.
- Mikkelson, David (May 28, 2015). "Fact Check: NASA Discovers New Planet Covered with Marijuana". Snopes.com. Retrieved November 20, 2018.
- Ellison, Jake (June 2, 2015). "Grab bag: 'NASA finds marijuana planet'; hunter-gatherers use medical weed; most popular strains". Seattle Post-Intelligencer. Retrieved November 20, 2018.