Failed Chinese rocket
This mysterious object sparked a ton of interest on the subreddit. The discoverer described it as being honeycombed in shape, made almost entirely out of fiberglass, and had a fragile aluminum disc. The person discovered this thing in Guam.
After getting all of the details, Redditors did what Redditors do best. They researched everything they could get their hands on, which led them to believe that this object was a part of a failed Chinese rocket. Records show that parts of the rocket had passed through the atmosphere before the rocket made its way back to Earth, landing near Guam.