r/EmDrive

2.7K archived posts · Aug 2014 – Aug 2026

EmDrive

r/EmDrive

Archived posts from r/EmDrive, Aug 2014 to Aug 2026.

Created Aug 3, 2014

12KMembers (last snapshot)

2.7KArchived posts

Welcome to r/EmDrive

The EmDrive (also known as an RF resonant cavity thruster) is a purported reactionless propulsion technology, which would if true would revolutionize space travel and the world economy. However, sadly, it is a pseudoscientific fraud, also known as pathological science. After nearly 20 years since its "invention", there is no compelling empirical evidence that it works as described despite ample testing of a relatively simple design and all theoretical explanations for the so-called EmDrive effect being completely at odds with our most fundamental theoretical knowledge of physics.

Some interesting links for those who wish to learn more:

Wikipedia,

EmDrive.wiki

Snopes article on EmDrive

RationalWiki

Wikipedia page for Pathological Science

Wikipedia page for Pseudoscience

Why you shouldn't be excited about the recent EmDrive paper in AIAA Propulsion

And some overview YouTube videos: (1,2,3)

The r/EmDrive Rules of Participation:

This subreddit welcomes people of all backgrounds to participate in polite discourse about all things EmDrive and other radio frequency (RF) resonant cavity thrusters. We encourage scientists, builders, replicators, enthusiasts, believers, skeptics, and the like, to come together on the most active EmDrive sub and treat each other with civility. Polite banter will be tolerated. Impolite cruelty and name-calling will not.

Our full list of rules can be found here.

Please also abide by Reddit's policies:

https://www.reddit.com/help/contentpolicy/

https://www.reddit.com/wiki/reddiquette

In short: remember Wheaton's law.

Related subreddits: r/skeptics r/VXjunkies r/AskScience r/Science r/physics

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